I attached my samples to this post that I've been have trouble with.
The CS on the left, is basic CS and is the 1st attempt and has peeled etc.
The middle one is watercolor paper, so no peeling, but no lightening really.
The right on is bristol paper and is the last attempt using more gesso and including a different stamp too and trying distress stain at the top.
With all the samples, only some lightening occurred---but the last one did have the most lightening, so maybe my gesso is too thin when it stamps.....but I will say that water was not lightening it too much so I switched to a baby wipe and that took off a little more---maybe I need a soap?