Here is an example of what photoshop can do. The picture on the top was shot against a mocha-colored sofa. With photoshop, the background can be changed to put the subject in let's say a "toile" background. There are immense possibilities here in terms of backgrounds. Of course it is better to have actual things behind, but for lack of a toile background (for instance), as it is a difficult material to find, one can create the material for it.
The mood of the lighting can also be fixed in photoshop. There is no need for a actual directional lighting. Everything can be controlled. And the opportunities for play and imagination can be maximized to your heart's delight.