The colors are kind of weird, the person's center of gravity makes it look like they will fall over, and their right shoe is pointing in a weird direction and looks very flat. I also agree with cure. The pants aren't bad though.
I think you should spend more time in the early construction stages of your pieces, they always end up with lots of dithering and other pixel-tweaking, but it's laid on top of a weak foundation (an unnatural and stiff pose). also, why doesn't this character have a face?
Vc tem que melhorar essas sombras e.e