Wow! There's no doubt about it, this is one spectacular photo! The timing is absolutely perfect, and the colours are simply beautiful. The pose of your model feels both liberating, and certainly feels as though they are in 'levitation'. Every aspect of it increases its impact on the viewer- I find that even the light clouds at the top of the photograph add to it. I love the silhouettes of the buildings in the background. I think they make it all the more effective.
In my opinion, you've achieved a fantastic photo! It's composed so wonderfully and creatively.
If only I still had my premium member ship, I would write you a critique!