Federico wrote...
Last time I checked, girls like big shoulders lol :P
Hmm that's odd...I know I have broad shoulders but I barely even get a look from girls. Hmmm..!
lol either way, I would just dress in clothes that look good without being formal. I tend to wear very dark blue jeans and a collared black button up short sleeved shirt. Mainly because I have black hair and dark eyes so I think it works (hurray for taking tips from somebody I know who does a similar thing).
Shoes should be important but I hardly think that they will look at them and judge you for it, just make sure they look decent enough. Fix your hair, shave if you are the type of person who looks better clean shaven rather than with a beard. So on and so forth.
Otherwise just clothes that work well together I suppose, in terms of colors. Nothing too loose, tight in my opinion only really works if you are fit or thin. Just well fitted works well regardless of your fitness level.