Over the years, I have worked with silk and even taught silk painting 101. One of my favorite techniques is using "crackle" as a background. Crackle is a thick paste like material applied to the surface, allowed to dry; the dried fabric is then scrunched by hand creating cracks and valleys in the surface. Silk paint which is watery thin, is then washed over the surface settling into the nooks and crannies. After the paint is dry and heat set from the wrong side, the crackle is removed.
Since the paint is so thin, it needs to be "contained" by using a resist in order to create a specific shape. I used a clear, water soluble resist to outline the shape, let it dry and fill in the area with silk paint. After the paint dries and is heat set, the resist can be easily removed by soaking in water for a short time.
I had some extra painted fabric and decided to use it as a backing.