From my clothes he will deduce I have a long-haired cat
From my sofa he will deduce I have a long-haired cat
From my kitchen he will deduce I have a long-haired cat

Oh god, my cat's hair is everywhere! I'm afraid he's my most characteristic feature.

But to be serious:
From the numberless painting crafts in my desk he'll deduce I like painting.
From the amount of 'beauty' stuff in my bathroom he'll deduce I'm mad about self-care
From the inner of my fridge he'll deduce I don't eat at all ))) (the truth is I eat outside of house mostly)
From the mess in my rooms in mornings he'll deduce I'm a sleepyhead and constant 'in-a-hurry-woman'

By my trousers he would deduce I have a middle sized and fair haired dog by the hairs and by the paw prints slightly higher he could tell that my dog likes to jump up at people and is therefor not well trained.
My shoes are always a little bit muddy, therefor I live close to a forest.
In my room he would deduce:
I’m quite sentimental about past things because of the state of dust un few things and my age difference on various pictures.
I don’t spend much time there because he would see how untidy it is and how cold it is up there.
He would find I’m quite easily obsessed with stuff I like because of all the pictures.
He would deduce I don’t like change because there are still many things of my childhood and no posters or at least not many.
He would find the scale on the floor and would know I’m quite self-critical about my weight, probably a result of being a little bit more plump in the past and being bullied in the past. But by pictures he would find it is insane.
He would also find my schoolbag packed permanently, so I’m a schoolgirl. The schoolbag contains 2 pocket calculators, therefor I’m into maths.
In our bathroom he would find no cosmetic products, so he would conclude I’m not to concerned about my looks.
The DVD-Collection would tell him I’m totally into series and despite my age still like Disney.

And there is so much more…

But one thing I love deducing although I already know it, so it isn’t a real deduction but I like imagining other deducing it… Did that make any sense? Whatever:
My friends arm (Pitagor) is constantly covered in little bruises or scars of thin claws, so she owns a cat-monster (she is actually quite cute…)

MK

I'm not entirely sure what he'd get about me, or where he's see me. Seeing me with different cars, clothes, etc. would give different impressions.

Taking the scene of me having dinner at a restaurant, which is fairly likely:
He'd see a slight tan, but not significant, with tan lines for a t-shirt and shoes with socks while I'm out in the sun. The tan is too weak to be from working outside, so an office worker with an outdoor hobby that doesn't involve watersport. He'd most likely see me in jeans, and I'd be without make-up, so not an office job where I'm expected to dress to a particular standard - clearly I can dress casually at work. He'd likely deduce I work in IT / with computers. He'd see long nails, but some broken, chipped, or misshapen. Long nails a result of not bothering to cut them, rather than something I try to create. That means overall good nutrition, a fairly healthy individual (and had been in childhood, as well). The hair backs this up - longer and healthy, despite its current mistreatment of being bleached and then dyed purple. My hairstyle would show I don't keep up with trends, but just do what's practical / what works for me. The same can be seen in my clothes.

Unlike nearly everyone I meet, Sherlock would see the swelling in the joints on my fingers. He'd see my hand is just slightly disfigured. Arthritis, of some variety, and between my age and my lack of skin issues, that says rheumatoid arthritis. The way I'm able to move says it's well controlled. He might even notice the slight swelling in the joints for my jaw, which would suggest the arthritis was once relatively aggressive, so I must be on an intensive medication process. It's not remission, as I still have non-permanent swelling in both jaw and fingers.

Sherlock would see hair from two cats. He'd not see dirt under my nails, and he'd likely wonder who worked on those cars I play with. If he saw me with my significant other, he'd be able to tell we were very familiar to each other and had well-formed patterns for interactions - clearly a long term relationship. But not marriage, even though as a heterosexual couple, we could. I'm not sure if he'd see or be able to deduce why we aren't married.

Without more, I don't think my outdoor hobby would be revealed. However, if he saw me walk out to my car, he'd at least have a clue. I'd most likely be getting in a WRX, which says motoring enthusiast. I'm not sure if Sherlock knows enough about cars to get more than that. If he did, he'd see stock ride height, stock wheels, stock suspension, stock brakes. The tires aren't grained and the brakes don't show glazing / signs of high heat. This says this isn't the car I use in sport - a WRX wouldn't handle either on-road nor off-road sport without mods, signs of heat, or the car breaking. The dirt pattern on the car is also consistent with daily driven and stored outside, not tracked or used in dirt (they create different dirt patterns). This says there are other vehicles used in motorsport. The tan lines suggest car, not motorcycle, but what car? I don't believe there are clues as to what I normally run on track that he could get from what he could see at dinner.

There are probably other things he could gather, but I'm not sure what.

This is gonna be fun :D
From my appearance he would deduce the following:
-  Hair: Long, dark blonde, dyed dark brown at the tips. Suggesting a want to be alternative, but a need for subtlety.
- Shoes: Heels covered by jeans - trying to hide the fact that she is unusually short. Approximately 1,56m ...and a half.
- Neatly painted nails, slightly chipped polish – a busy girl.
- Traces of chalk on hands, hips and back of sweater: A teacher (explains the need to keep the haircolour subtle).
- Age: 18 -20, too young to have graduated: A teacher trainee, then.
- Grey animal hair on clothing: she’s got a cat. A grey cat. Probably a British Shorthair, since the badge on her shoulderbag suggests a love for everything British.
- Marks on nose: recently wore glasses but isn’t wearing them anymore. No trouble reading the newspaper at cafeteria table: Short-sighted.

From my desk space:

- Owns a wide range of both fiction and non-fiction books and a spectacular amount of bookmarks. She’s into reading.
- Wall is decorated with magazine clippings and other amusing pictures: creative.
- Messy, but organized – papers are stacked per topic.
- Notebooks everywhere: a writer. Smudges on the paper: left handed.
- Nailpolish, cathair and crumbs on laptop: frequently used + cat lies around on the desk.

He would probably meet my cat there and see that she is female and called 'Amber'. Not because he's clever, but because she's got a nametag :D That's not cheating! It's observing!

This is an interesting thread. It invites a hard Sherlockian look at yourself. Hmmm.

Well lets see. If Sherlock were to come in and see me sitting here, I would naturally stand up to greet him. That is when the deduction would begin.

The first thing he would notice is the fact that it takes a moment for me to rise up to my full height, moving with a small amount of stiffness. He might notice a slight limp favoring the left leg. He would immediately see that I am older than I want to appear as the grey roots are beginning to show again. He would see laugh lines around the mouth, wrinkles forming along the forehead and crows feet around the eyes confirming that my age is greater than it would appear at first glance. The dark circles under my eyes and the fact that even though it is morning, I look ready to sleep, I must work the night shift. 

As I hold out my hand to shake his he would note how rough and weathered the skin is, while also noting the short cut nails devoid of adornment and that my hands are very clean. He might deduce that the skin has become weathered and dry due to excessive washing possibly with an astringic substance. The absence of any make-up or perfume coupled with the night shift and the fact that I wear my long hair pulled back from my face he would surmise that I may work in the medical field. My shoes are clearly worn, especially around the outside of the soles, indicating that I walk a lot which would support his deduction of work in the medical field, most likely in a hospital for where else would one be on their feet during shift, wash their hands excessively with a strong soap all during the night shift? 

He would look around the room (I'm currently in the dining room) and note the children's artwork on the wall and the toys scattered about and deduce that I am a proud mother of at least two children. He would correct that deduction to three children upon inspection of the family calendar on the wall behind me as the child's name on several appointments and after school activities is different from the names on the art work. Based on the skill level of the artwork on the walls, the extra pounds and low hanging womanly parts he would conclude that at least one child is fairly young and I had at least one late-in-life child if not more. 

He would note the age of my wedding rings and deduce that I am unhappily married, but he would be wrong there. I only say this because it struck me that in ASiP when he made that deduction I looked at my own rings and saw how dull they were. 

He would note that my clothing is well worn, but in good repair. The clothing is simple without fancy patterns. Solid colors long sleeves, straight hemmed jeans that are clearly not designer in any way. He may deduce that I spend my money on other things such as items for the children. The child's name repeated on the calendar clearly takes a large amount of time and energy owing to the nine appointments with specialists in the current month alone. He would note that there are multiple church related activities on the calendar as well and deduce that I as well as my children are devote members of an organized religion. He would be wrong in that deduction, as my oldest child is a self-proclaimed atheist even though she is very active with the church's youth group.

He would note that the kitchen behind me is neat and clean, but the rest of the house is rather messy, not unlike his own flat. He may deduce that the kitchen area more closely matches my own personal appearance of neatness and deduce that the kitchen is my domain, supported by the fact that most mothers are the ones who do the bulk of the cooking and cleaning in that particular room.

I'm sure there are more deductions he would make about me but I really am tired and need to go to bed, so I'll stop here. Hope that painted a decent picture for everyone. 

Cheers.

Alice I 

Oh, I just stumbled over this. Let me see...

1. He could surely tell I'm a teacher. There's always some red ink on my finger or my hand. Or my jeans. That, and there is an unusual high amount of teenagers in our village that either greet me or try to hide from me.
2. If his German is good, he could most likely tell that I live near Bonn by judging my accent.
3. Looking at the bruises he could tell I'm into kickboxing, but not for very long. And not very good at it yet.
4. The ring would tell him I'm married. So would my husband.
5. From my fingers he could tell that I don't play any instruments but spend quite some time writing on my notebook.

I can't remember the last time I wore my wedding ring!

Very good, Lily. I don't know if Sherlock would be impressed but I am. 

As for the staring - this may happen even if one has a boyfriend or husband. 

Oh, I don't know. You sound pretty interesting really. Although student who smokes and drinks a lot would not win you any points for originality in any of the UK's  Universities or Colleges. 

Indeed. Mr. Hemingway was extremely perceptive (same applies to women too in my experience!) Also too much navel gazing can lead to...collisions...with trees, lampposts...