I see you think you're so clever now

This picture leaves an interesting feeling that makes me want to learn more about the model's thoughts and the photographer's motivations. Ok, it's a portrait in a (dirty) mirror of a girl who looks a bit lost, maybe a bit sad too: we have seen shots like that dozens of time. The good mood of the picture is given by the overall white-grayis tone that is a good choice, bettre than a strong contrasted picture that would have been too hard for what is wanted to be demonstrated here.
The composition is quite well balanced on the left side, and the model's look captivate ours, and her body in the mirror stands above her shoulder on the foreground. I simply regret the right most part of the picture that I think is too bright and can make the eye loose itself there. I guess cutting everything at the right of her head might restore a good balance without losing any interesting details that stand on the left side. Or else, maybe darken the wall on the right.
The lighting is pretty good here as her body has nice and smooth tones with highlights which give a lot of volume, while the background (above the tube) stays flat with no reflection. The right part of her face is well dip into darkness which gives a very mysterious/shy feeling too. Two details that tickle me: the highlight on the tip of the nose could be removed as it's a spot that I focus on; the shadow of her hair lock hides a bit too much the eye, a few millimeters back might avoid this.