Love this! It's sharp in some areas, and soft in others but that works well with the "flow" of the subject. Composition captures my interest, though I would like to have seen just a bit more of the black background showing through. Very interesting juxtaposition of lines and curves, and your lighting worked well.
Quite captivating. I'd like to see a bit more umph to the foreground, however. Perhaps a bit more light/contrast or sharpness directed there...but that might be against the contest rules?
I really love the shades of purple in this picture. It's very abstract, and the lighting is beautiful. This would actually be one of my top picks for this challenge. I'd give this a 9.