Crayon Art! Very cool. Tape off the white with Painter's tape. Then after melting crayons, place stencil over bottom, mark with toothpick/chalk and then paint black acrylic paint once stencil is removed.
Cool no? (instructions in case i forget = The girl, umbrella and ground are stencils. Cover the stencilled area with tape (low tack) and then splatter inks or watered down paints onto the canvas and allow the paints to dribble down the canvas as if coloured rain)