ACEO: Art Card, Edition, Original. ACEOs are tiny artworks (exactly 2.5 x 3.5 inches) and, as the name implies, they can be prints or originals. Mine are all originals.
These are watersoluble crayons on black matboard. I was going for a chalk-on-the-blackboard effect, reminiscent of coloring on the board during school. Nothing subtle, but a lot of fun.
"A" has sold. Buy the others here.