I’m painting on hot pressed watercolor paper that I prepare with a coat of gesso. I am using Golden Extra-Heavy Gel (Matte) medium to glue the pieces down. Over the top of my collaged background I apply a coat of Golden Soft Gel (gloss) medium. This protects the images and will allow me to wipe paint away from areas. (You’ll see what I mean soon.)
So that’s where I’m at with my projects. I have a total of 4 collaged backgrounds ready to go for tomorrow and the under-painting of a cake with no collaged background.