Photigy – How to Make a Composite Image from a Single Light Shot
https://www.photigy.com/howto-make-a-composite-image-from-a-single-light-shot/
So, you’re ready to try your hand at studio photography, but you only have one speedlight. Can you still create a good image?
In this tutorial, Timothy Kou shows you how to combine multiple images shot with only one light (in multiple positions) into a single composite using layers in Photoshop.