To me, cinematic, you seem a bit of a rock/alt/metal person (at least from that one photo you've put up), so play with that. Play with your own style. Don't go and get a tan if you don't want, and whilst obviously getting your hair cut to keep it shaped and neat is important, you don't need to drastically change the style to anything you don't want!
Right, I'll try and go through a few of your points as best I can. However, a lot of the more detailed stuff, I'd say read a few of the threads in this forum, as there's a lot of good advice here already. Check my profile and look at the threads I've posted in - there's a lot of good stuff both from myself and the other posters in those threads that you can work with. But here goes....
1) I don't dislike it. If I'm right in assuming you're going for the alt/rock type look, and if you're wearing black sort of stuff similar to what you're wearing in the photo you've put up, then I think it will go relatively well. I'm not a big fan of showy jewelery other than a watch to be honest, but in certain styles it can go well.
2) Again not sure where Soul lives, but there is nothing wrong with wearing a watch. I've got quite a few. One is an expensive 21st birthday present that I only wear for really formal situations. The rest are £20 from River Island and were brought to go with different outfits. I wear a brown leather strapped watch when wearing brown shoes and belt, and a black leather strapped watch when wearing black shoes and belt. Basic rule here - match the watch to your belt and shoes if it's a leather strap. Metallic watches are fine in and possibly more versatile. However, I actually prefer the look of a leather strap that matches the outfit - it shows that you pay attention to the details rather than just whack on any old expensive watch.
3) Eat more, lift weights, exercise, general stuff really. If you eat well, look after your nutrition and get a decent weights plan off the internet, you should see results pretty quick as you're quite skinny at the moment. Shouldn't be too hard. You shouldn't really need supplements or anything as a complete beginner, as just starting to eat right and exercise right will produce some pretty decent results.
4) I quite like those vans. I think they'd go well with a similar outfit to the one in the picture you've posted. Again, plenty of info on this site (and the internet at large) already, but as a general rule, make sure the shoes compliment something in the outfit. Often this will be matching shoes and belt (and watch?) and making sure the colour of those things goes with the colour top and pants you're wearing. So here you're going to have to do some research into colour theory (easy to find on the internet) - which will give you some advice on when it's best to wear brown shoes, grey shoes, black shoes etc. etc.
5) I'm not a fan of logos on anyone to be honest. I think whatever style you're going for, you can achieve it without logos. Actually, I suppose by that I mean brand names and corporate logos. If you've got a printed tee shirt with maybe a skull on or something like that, it can look good. But don't just go and get a standard band t-shirt or something with a big brandname logo on it, unless it completes the outfit. Dark fitted (If you can pull off skinny go for them - but not many men can without looking feminine. If you can't, go slim) jeans will look good on virtually everyone. Again, here, just look at some of the advice on this forum from myself and others, plenty of general info around.
6) Again, this is a big taste/style thing. Personally, I'd never wear them. And I think a lot of people just come off as pretentious when they wear them. BUT it is largely dependent on the general style you're trying to pull off and the ring itself. If you're going for a full on heavy metal head look and you wear a skull ring or something similar, then it could look alright. I suppose here you've got to know what you're after and just see. Maybe buy some cheap ones and see if you like them on, if not, give up. As puaninja says - I think a thumb ring might look decent on the sort of style I'm assuming you're going for.
7) Not much to say here. Whilst acne is often not a deal breaker if it's only a little bit, it's obviously always going to be a bonus if you can keep yourself as clear from it as possible. Advice wise - plenty on here already again, I tend to use dermatalogical soap and a tea tree thing at night. If you've not got terrible acne, often it's best to try and make your routine as simple as possible - a decent chemical free face wash and SPAM is usually enough for mild acne.

Yup.
9) Plenty of good info on here for that. Poeticlyskuac on here has some great stuff that helped me a lot when I was looking at this. But there's plenty of other alternatives around as well.
10) Expensive is nothing. More important how they look, and whether they match your face shape. You've got a fairly long and thing face, so you don't want pointy sunglasses as these will emphasise that. Get something wider either rectangular or circular. And also the colour of the frames should match your hair/face combo - you've got quite pale skin and dark black hair from the photo, so probably black or metal coloured frames. Avoid those brown turtley coloured ones.