I'm not really digging the box adidas is in. Feels like it would've look better just being on the original background. But if you're dead-set on keeping the box, I would at least shrink it so it's not overlapping his foot.
gotta agree about the box... i'd like it if there was no box, and the "adidas" was on the bottom of his shoe instead. you might have to move him over to the right then though...