How to Create a studio background in Photoshop

This video by photoshopuniverse shows you how to make any photo seem as it was taken in a studio. Take the working photo and add a new layer over it and fill it in black as shown. Add a newer layer over that and add the filter> render> clouds effect. Increase the opacity of the cloud layer and merge it with the black layer as shown. Add the splatter effect and the sprayed stoke effect as shown onto the merged layer and add a hue and saturation adjustment layer and colorize it as desired. Go to filter and extract and highlight the border of the subject to be extracted as shown and fill in and tweak it to make it more realistic.