Using a mix of white gesso mixed with water and acrylic matte medium, I covered over bits and places on the original painting. Then added more in using the same materials as the original painting = watercolor, walnut ink, water soluble graphite pencils, watercolor inks, etc. Whatever comes to hand, I use to make marks and changes.
It's still too close to the original so more changes to come. I just want to see where this one ends when I've finished (or cannot add anything more to the paper).