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I don't know how to explain it very well but i think the legs for the side frame come forward too much, it makes it look like the character is about to fall back, i think you should move the legs back a pixel or two.
You know... how many colors are you using? When I opened it up in my program to take a closer look I dunno if it saved funky or not but for some reason there was like grey pixles in there and the left and right as far as colors go didn't quite match up to the other side. Might want to double check that or else maybe it's the way it saved for some reason.