I love the way her dress sparkles, and I can't really think of too much that is wrong. I think that the tone of blue you used is rather over-used, so you could make her alot nicer by changing the hair color to the same yellow from the buttons. Also, just a question but is that a cape she is wearing? If so, Im pretty sure that capes, reach your shoulders. If its just one of those dress trims, you could make a smooth transition from the shorter part of the hem, to the lower part. Thats about all I have to say, other that that I like it alot!