I was painting it on a moist, lime plaster surface with colors ground up in lime water mixture. Broke with my hands when it's dry and glued back on the board, to create a cracked surface, so it looks antique and aged, like a piece of an old, antique wall transformed in a modern art :) On a wall it creates shadow. The whole piece is 1 inch high and 7" x 23" You suppose to hang it without any frame. It is ready to hang. Pretty heavy piece.
plaster, lime, pigments,