This is strikingly beautiful on multiple levels, from subject to content to execution. The focus/contrast brings you forward delightfully. The way you're tossing your shock (apt) of hair with a carefree motion displays your sassiness. Your casually holding a cigarette asserts your devotion to life's pleasures, 'correctness' be damned. Like so many of your other shots, this is moving.
In my opinion, this picture is one of your best pictures. I like posture of the girl, movement of her hair, analogy between title of the picture and energy given by the girl ! And the background is amazing !!! Congratulations !
Nice work!