She only seems to have one expression, which is a pity, but you did great.
The backgrounds are definitely interesting, and a little incongruous until you see the theme emerging. I *love* how you've handled the backgrounds in general, you've left us with a strong sense of that urban roughness, but you've managed to make the girl POP completely in all the settings. It looks almost like you did some very subtle selective desaturation here, but since I can't be sure, I declare the effect awesome whether you did it or not.
She poses nicely, she just needs to learn to give you more expressiveness. I know it's hard to imagine, but us guys actually do look at the face. Only for a second, true, but we do look!