Xmen K-Mart Critique pls

Ok after seeing the AMAZING freaking job Anathemasremedy did on her Hogwarts piece i was inspired to try to do something similar. I've never been good at multiple subjects or at doing things with distances so I figured why not. It's obviously not done yet, I'm baaadd at humans so I thought I'd let you folks help me make this as good as it can get. Soo see something wrong with this? Think I should change something? Too big? too small whatever, nitpic it to death so I can fix it up before I do the final pencils and inks. Thanks guys!!