4x4 on wood block.
I can’t be the only one who has been given for xmas or my birthday, canvases with staples on the sides instead of the back. So to hide the unsightly staples, I have started wrapping the edges with a good quality cloth tape or linen hinge tape (framing suppliers or bookbinding suppliers), then coat it with acrylic matte medium, and once that dries, a coat of gesso. If you aren’t concerned with archival issues, white hockey tape (hardware store/ sports shops) also works.
This piece was coated with a layer of gesso and allowed to dry. Then I painted it with washes of thinned acrylic paints, stamped with a handcarved stamp and a round lid, and made marks with the edge of a brush. The resist areas were created by using clear dimensional fabric paint applied to the wet fabric. It pushed the paint aside and created a batik like effect.