Apply 2 coats of SW-508 Black Gloss over entire plate. Allow to dry between coats.
Liberally spray plate with water bottle.
With overloaded fan brushes, randomly drizzle SW-503 Orange Gloss, SW-505 Purple Gloss, SW-506 Bright Blue Gloss and SW-507 Bright Green Gloss over the plate.
Tilt the plate in all directions, causing colors to run.
Before the glaze dries, with the tip of the brush handle, scratch away the colored glazes revealing the black glaze.