After my Impala was built and painted, it was time to add the snow and groundwork. First I prepared a wooden plaque with a few coats of varnish and let it dry. Then I mixed Celluclay in a plastic container with a little white glue and white acrylic paint. I wrapped the mixture in an old T-shirt and squeezed out excess moisture. The more water in the Celluclay when it's applied, the more it will shrink and crack later.