I shop for graphic tees at Urban Outfitters and sometimes at Hot Topic. I buy my skinny jeans from Hot Topic since they're generally cheaper and are more fitted. I just recently started shopping at Plndr and Yesstyle a year ago. You can get really cool, high-quality stuff from Plndr for cheap, but the catch is that the sales only last for 24 hours. I also have clothing bought from South Korea, Japan, and China through Yesstyle.

IMO, dressing well is all about balance. Obviously, wear the correct size clothing and ones that fit your body type. Colors should complement one another and not conflict. Don't wear one color throughout; one/two different colors should help. Generally, I'll divide my upper and lower body between light, medium, and dark tones. For example, light shirt + dark jeans + medium dark shoes or dark shirt + medium dark jeans + light shoes. Wear clothing appropriate to the season. Designs should be simple and not too overbearing.

Other than that, what you wear comes down to what you think looks cool, will look great on you, and feels the most comfortable. Look clean and groomed especially. If you feel stupid and uncomfortable wearing something then that's an indicator that you shouldn't sport it in public. Style is subjective and is always changing so keep experimenting until you find what is right for you!

>_<; I think Tap Out shirts are awful.