Hey nice shot, nice model she is very relaxed and has a great smile.
Now what would I change, well unlike the others i don't really like the background door especially the hinge on the RH side, the texture of the door could be great and if you moved your model a pace or two forward from the door the background would become OOF and soften. The lighting is just not enough on her LH side as we look at it as her eye is blending with the eye socket area, you could try using some sort of reflector (White sheet of cardboard or I like those twisty silver car sun protectors) to bounce some of the light back. Hope this helps.