Wisniewski has created a particularly successful iteration by overlaying
portraits with organic patterns—from flowers to jagged peaks to a Rorschach
blot. He came to the combination through experimentation.
For his image of a bearded man in a diaphanous red coat, Wisniewski found an
overlay photo that “fit well and had a similar shape to his body.” Although many
of his portraits eschew color, the red hue of the overlay image appealed to him.
“I just thought it looked interesting.”
He once said "Initially I take a number of portraits and textures I’d like to use and experiment with quick overlays. Once I find a combination that works I’ll expand on it. In terms of technical stuff the actual overlay is as simple as using lighten or multiply in Photoshop. Most of the work is deciding positioning and what parts of each image to show, cleaning things up and matching contrast.