It's a far better photo than I can take.... so who am I to critique? But then again, why let logic stand in the way of sharing my thoughts
I find the shadow over the right side of the model's face a little unfortunate. How many lights were you using on this shot? More fill required off too the right... The angle of the shot feels a bit precarious (it kind of gives me vertigo), but I love the mischievous expression on the models face, the colours are classic canon and as previously mentioned, the motion conveyed by the movement of her hair gives the shot real energy. You've done well, too, to capture her skin tones against an obvious harsh backlight.