This is really beautiful. Looks like a ray of light somehow lighting on the flower from some unknown source. I don't expect you to share all your secrets, but may I ask what software you use?
This is one of the most beautiful fractal flowers I've ever seen. I love this kind of work, so I'm afraid there's not much more I can comment aside from my personal taste, but I can surely notice that one the strong points of this piece is the confusion between water (the thin rain and the little droplets on the petals) and light. They look like they are made of the same element and create awesome games of colors.