It is a nice image, but it lacking just a bit of pop. Seems a bit on the flat side. I would say 1 stop lighter would have nailed it. Also a reflector coming in from behind to put a rim light on her hair would have been nice too.
As far as what Terrance said regarding the grimace, he is right although it doesn't bother me too much. Looks like she is thinking about, or has just done something she isn't sure about.
Looks like it could be a cover shot for a magazine though, nice pose and angle.
Here comes my usual harsh commentary (sorry), the wind blown effect is a nice idea, but it doesn't fit in with the rest of the image. She seems to be squinting/grimacing from the wind even, doh. My monitor is months out of calibration, but this does seem about half a stop dark, which exagerrates the warm skin tones (gold reflector? maybe in this instance the white side would have been more appropriate). Swing on thru the usefilm chat sometime so you can get the opinion of more than one overly critical person, hehe.