Nice! It's a really great looking painting! There are really only two things that I can point out that need work:
1. the background seems kind of bland, something brighter or more dynamic could really bring out the rest of the painting.
2. The shine of her hair doesn't really make sense, if anything it would probably be better if the red shine were on the long parts of her hair to the lower right, and the bright white shine were at the top.
Overall, it's a pleasing piece of art, and I really like it. I hope to see more! :D