Do you remember this painting? It's one I'm working on for a high school graduate. I wasn't feeling anything powerful from it. So, I changed it.
First, I painted a white guitar over the other two. And then, I took the paint peelings from my plastic pallet and collaged them onto the white guitar.
Cool, huh? When you use heavy duty contractor plastic and just let the paint dry on there you create these layers of color. They peel right off the plastic when it gets thick enough.