Great image! I like the simplicity of the lines and the two color usage. Lighting is great, though I think trying it backlit directly behind (from this view) the girl might be worth a shot. The reason I say that is she starts to slightly blend into the shadows on the left, and I think her silhouette should be as sharp as possible. Definately brings back memories of that great 80's movie, Karate Kid. :) 7
This is definitely one of my favorites of the challenge. The lighting certainly sets a great mood for this one, and that's what the challenge was all about!
A well executed shot, though I get a feeling that there must be loads of detail and texture in the girl's clothing. Maybe a little more light on the figure (but not too much) would be an interesting alternative?