Here is a portrait of my Granddaughter Emily. It was taken in my front room, which doubles as a small home photographic studio. I move my settee and put up a seamless grey photographic background. I like the grey background as it is so versatile. You can put a couple of lights on it and turn it bright white, don't light it and move it further away from the subject to turn it black or allow some light to fall on it to get a nice dark grey look. The grey background also lends itself well to composites including adding different types of textures to it to create a different looking background. This was taken with my Canon 5D mark iii with the Canon 85mm F/1.8 usm, which i find a great portrait lens.
The main light i use is my Wistro AD360, its a great flash that is around 6 times more powerful than a standard speedlight and only slightly larger. Its a bare bulb flash much like a studio monoblock. I use a selection of softboxes and octaboxes. This was a medium 60 x 60cm Lastolite Ezybox with two layers of diffusion and a grid. This was to camera right with a silver reflector to camera left. Then i used a Canon 580exii speedlight which i gridded on the background at a very low power to put some light on the background.
As you can see the how versatile the grey background is, its easy to select your subject with the quick selection tool, use refine edge around hair etc, i always save the selection if its a complex selection. This will save you time!
Open your selected texture, i always desaturate it just leaving the detail, drag it into document as a new layer. I apply the saved layer mask to it and change the blend mode to either overlay or soft light.
Do i wish i had more space to set up larger light set ups ? Sure i do, but you can get some great results from just one light a reflector and a small space.