On the plus side, I think you have some great colouring skills, the eyes are well handled and the lighting is beautiful. That hair is so yummy.
The proportions are a bit off/confusing. if you intended it this way because you're going for something like a chibi style, then you are mixing too many elements together for that to work effectively (proportion issues, large breasts, etc), and if you're going for something more realistic the same things apply. I guess what I mean is that the combination of elements are a bit confusing. Overall it's well done though, so keep it up :)