You also say his legs are supposed to look thicker, because he's wearing baggy pants. Go put some baggy pants on. Do they make one of your legs look as thick as your waist? I should hope not.  Before you justify things, actually try them, show the edit, and explain why that doesn't work for you. You never know, maybe a whole bunch of people will love the one you don't like, or maybe people will agree with you. In either case, it's sorta disrespectful to just cast aside crits without trying them, first.

 

Apologies if I come across a little hard. I'm really making a statement for anyone that comes across this thread, not only you. I do not mean to say there's no hope for you, or that you suck really bad. You've got a fair grasp on a number of aspects, and just need to hone a couple more.

 

Go back, study other works that are similar to what you're trying to produce, maybe talk to the artist if you can (Indigo, if he has time [sorry for wh***ng you out, man :P] is quite the nice chap, and will most likely be rather willing to give you some pointers) and try use their ideas in your work (But don't steal palettes or lineart, make your own if y'can :P)

 

Another fun (and scary) thing to do is crit every possible thing you see wrong with your piece, and ask people to point out what you missed.

 

Heh, I think I've said enough. Good luck!