A long time ago this was another painting. But it fell off the canvas.
Well, that was a lesson.
There's a reason for using the right primer, not painting thick oil paint over crayons and then rolling it up. (I knew that.)
But the pieces looked kind of interesting. So I puzzled them together and embedded them in Dorlands cold wax medium with a palette knife. A hair dryer leveled it out. It was opaque at first, took forever to dry, but it eventually became translucent. And who doesn't like translucent?
I might have to do this on purpose next time. Unless it falls off the canvas again.