I've been doing these little things as fun color studies/warm-ups in various sizes and I think I'll set up an Etsy store to sell them in fairly soon. I keep giving them away, which is bad, haha!!
Most of these are either 2.5" x 3" or 4" x 5".
They're all done on cold press illustration board with watercolors and colored pencils. SOme of them have little metallic gold or silver ink accents.