This is, overall, a gorgeous piece. I love the intricacy of the folds of the clothing and how detailed the hair is. The wings look great, and almost have a bit of a transparent feel, which is awesome. The pose looks elegant, and the glitter/lights are a nice effect. The background is well-done and pretty, but not distracting from the focus.
There's only one thing I don't like; the face that it doesn't work with the series quite as well as others. In all the other colors, the hair and skin tone match the color fairly nicely, if not exactly. I know green hair and skin isn't easy to work with, but you are such a talented artist that I think you could have pulled it off. The pale skin and blonde hair make this stand out from the others as separate, so that's the only thing I would have changed.