Adding grain is always a good way to give a photo an edge, to make it gritty and different. This type of picture needs the right kind of model who can give a strong look without looking aggressive.
Inspiration can come from any direction this photo was inspired by the model and her interest in burlesque and 1950s styles. Using the compact makes the model appears to be oblivious of the camera, it is as though she is alone in the room, completely absorbed in her own thoughts.