Create a shape or structure using Prang air-drying clay. Keep the clay moist while designing the shape.
Set your sculpture on a sturdy table in a warm room. Allow the sculpture to sit for 24 hours.
For a smooth texture, sand with a medium or fine-grit sandpaper. Add paint, stain or varnish as desired and air-dry for another 24 hours. For a shiny finish, fire your sculpture in a kiln. Most sculptures need a temperature of about 1750 degrees and a bake time of about 18 hours.
Design your clay sculpture. Do not worry about keeping the clay wet, as nondrying clay stays malleable regardless of temperature or water content.
Immediately bake clay in the oven for one hour at 350 degrees. Allow the clay to cool before handling.
Apply paint, varnish or stain as desired. Because Prang clay is available in a variety of colors, you may wish to add nothing but a coat of varnish. Allow paint, varnish or stain to dry.
Fire your sculpture in a Kiln.