painted surface because too much heat directly onto the wrinkle paint will cause it to "gloss" and not match the texture. i always keep the heat-gun moving to keep the heat distributed and to avoid burning the paint. after a few minutes, the wrinkle pattern will begin and then, using the heat-gun, i apply heat just ahead of the pattern to move it along. the entire surface should be wrinkled in about ten minutes total time.
now, i move on to the next surface. at the edges, i shoot the paint from over the surface being painted rather than from the opposite side. that way the edges will blend and not 