There is a lot that I like about this shot: model (!), pose, framing (bearing in mind eye direction) and light ratio (comparing key light side with the fill side). My issues are:
1) lack of light on the hat or possibly the processing has resulted in a flattening out of the darks of the hat which renders it as a flat shape that dominates the image.
2) the skin tones seem somehow subdued--I mean, I see the specular highlights (along the edge of the nose, e.g.) but it still seems like the skin tones are smooshed down somehow. I expect to see, e.g., a slightly brighter end of the gradient from bright to dark.
3) skin color balance seems to tilt green which may be just fine and within artistic license, obviously--but in general the hue does connote sickliness.