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EDIT N/A
#1, what shading on the clothes? there is none o.0
#2, yeah i probably could have done better on the colouring of the hair but that's always been a pitfall of mine =/ i need to find a hair drawing/colouring tutorial or something of that nature and study it..
As for the art as a whole, you've got to bear in mind that I had a 50x50px, 15KB limit.
There's only so much you can do for those restrictions if you want a smooth-ish INTERESTING animation =P (instead of say,, one simple boring eye blink..)