The fabric I painted using Pebeo transparent paints. They are light reactive, and show the texture under the wet fabric as they dry. I painted these on the back porch, so the weather texture of the boards shows up as background. I used a green oil paintstick to draw the circle. The circle is insufficiently swishy, so the next step is to try some paint on a brush.
I do rather like the background. I can do more of that.