Actually, it's not that bad. It's just that some of the moving parts are out of sync and the animation is slightly more gittery because you made it move more than mine, which isn't bad, it makes it look more lively.
I think the main problem is the hair and face. They don't really match up too well, probably because the hair is matching up to the bobbing of the body, while the face seems to be floating on her face. If you matched the face movement better it would probably work nicely.