I had done a collage a long time ago on a large piece of wc (watercolor) paper and hated it. I recently found it in a pile of papers and tried painting over the whole thing and peeling off loose collaged paper from it. I then tore it in half and folded it and tearing the edges and adding more wc to it!
I then did a sketch with black stabilo pencil and used a brush and water to get my first painting down, my underpainting. I added some acrylic paint and then collaged a photo I found on pinterest to it.
Here it is opened. I did get brave and wrote some words. "What if you could go back and talk to your younger self...what would you tell her?"