I am still working with acrylic on watercolor paper, in a size small enough to fill completely in one painting session. I began with ultramarine and cobalt blue, applying them loosely with a brush. Then I added white and black, blending the colors as I worked. This blending created various shades of gray and blue-gray.
I added a bit of cadmium yellow light for highlights, and then drew lines in mars black to outline the amorphous shapes. The composition has a central, cave-like focus, but I'll let viewers see what they want to in this abstract, non-objective image.