( I'm not trying to be rude or anything, please don't take it that way. D: )
Look at the hand in your drawing. Do you really believe a real hand could do anything near that? It is bent in an awkward place and it has lost all of its depth and anatomy somehow. Go on Google images (or DA, or a number of other sites) and find a picture of a hand sideways. Study it. Learn what it looks like, how it works (since you can't use yours for whatever reason). Rinse and repeat on a new hand.
As for the rest, the lines are a bit..sharp. I'm all for clean and clear, but for one, her hair that she's holding or whatever, at the tip? It's sharper than the tips of the horns.
I'm sure I missed some things, but hope that helped some.
(If I did give some sort of misinformation please no one eat me. :c It's 7am.)