I've been painting again. This time it's a background for a challenge quilt for our guild. I have a really ugly fabric to go on top of this but I think it will look great when it's finished.
I used Epsom salts on the light blue bit below. The darker bit I achieved by running a sponge brush with paint and no water over the wrinkled fabric. I let that dry and then added a wash of lighter blue over the top. I wonder what a large piece would look like using that method, or adding a wash of a different colour. Hmmm, more experiments needed.