I did not add any layers of collage to the smaller pieces, thinking that removing one layer might be fine. I think that is the case. This makes a nice background. I will put a coat of some neutral on it, either translucent or only partially covering the surface, meanwhile making some collage papers with the gel plate. The more I look at the paintings I did using many layers of collage shapes and paint, plus sanding, the more I like them. Even now I find these exciting.