There's a multitude of skills that are involved in creating a professional composite, and in this collection of GIFs by Richard Roberts we get to see the layers and layers of hard work behind a single piece of art.

Richard Roberts is a freelance creative retoucher and digital artist based in Milwaukee, Wisconsin. Over the past decade, he has worked on advertisements and promotional materials for clients that include Fox, HBO, Mountain Dew, Under Armor, Kelloggs, and Gillette.

Original source found here.