Ah, yes, I see your point. I tried that sort of shading originally but it just made her look very odd so I decided I would break the rule and go for something a little different. It's really the body I'm unhappy with, the collar is supposed to be standing up in upside-down cone sort of a shape.
You should really get yourself a DA :P, they're so handy for Pokemon projects because you can see everyone's tiles etc & get help / C&C easily. Also, your work is amazing so it deserves to be showed off!