I think that you could push Cap's head back, and pull his far leg forward. Right now, it's like he's about to fall over.
Thanks for the feedback, I'll incorporate your suggestions in the sprite:
('xcuses for the white background)
I'm Dr. Wiwey!
The style reminds me of Ghost Trick, really nice! Animations is also really smooth and the face is really well-made in my opinion (lovin' the expression!).
The boots look kind of.. circle-y though? Perhaps you could try to make some of the edges of the booth a little more rough. The tip of the tie could also move, and on the topic of the tie: perhaps you could adjust it so it looks more.. hanging? Right now it looks kind of glued on to the shirt.
Just my two cents. It looks nice none the less.