I used the Eraser tool with settings for various brushes to try and get the decollage effect. The "painted" layer is from an old refrigerator leaflet. It has some of the "Sumi-E" filter and a few others which I don't normally use. I "peeled" portions of it back with the eraser-brush hybrids to reveal the layer below. Interesting to do.

Shown smaller than the original completed size of 3960 X 2610 pixels.

See one original source here.