The only Slight critique I would give is that many of her details are being lost in the pretty and whispy color scheme. I would increase the light to dark contrast just a smidge, REALLY darken those shadows. REALLY lighten those hilights....and that her right eye (the closed one) needs to move closer to the nose just very slightly...but over all I think this is a very beautiful piece. It just needs some shadows to really get her to leap right off the page.
She looks fun and slightly mischievous!
(Sigh...Also the darn thing says my critique is too short so now I must take up space down here to gripe about it....-_-; Lol)