Liquitex Ceramic Stucco Medium is a thick, fine-textured gel that can be applied with a palette knife to give the surface finish of an Italian fresco.
Ceramic Stucco Medium dries to a light grey matt stucco finish and is a great absorbent ground for washes and glazing.
Try painting over the dry surface with acrylic paint mixed with Liquitex airbrush medium or drawing over it with pastel or charcoal.