I absolutely love the arrangement and the subject. They eyes are stunning! The colors are also bery beautiful, but I think maybe the hair could be a bit more vibrant, unless the softness is what you wanted. I also really like the fire she's breathing! I think you did a wonderful job with the shape of her head, and I absolutely LOVE her long, elegant neck! The diamond is also very well done. I don't think the color of the background was the right choice, although it does match the eyes, I think it kind of just is *there* instead of being part of the peice, you know?
Overall, the piece is really beautiful! I love it, and keep it up! I want to see more of her!