I thought I'd show a few steps of my work. I start with muslin fabric squares for texture in my background. They are prepared with medium gel then painted over with acrylic.
I make a general loose outline of my drawing...then start filling in the middle.
I usually go over my image with graphite and sometimes a black Pitt pen.
The details are painted in, and many layers of acrylic are added to the forms of the bodies and faces. I especially like painting the little mouths on these faces!