Here's Wanda demonstrating the ruffled plastic technique. Mix Lumiere paints with gel medium with a wooden stick, then add the various colors to a piece of shrink plastic. Hold the heat gun back from the plastic and heat just the mixture on top. When it is "ruffled" heat the entire piece so it shrinks and flattens. Wanda used black shrink plastic and punched out an oval piece with scalloped edges. Mine turned out a little wonky so she gave me her demo piece -- the one shown here.