Apply the paint that will show through the cracks to the surface and allow to dry.
Put 10 cups of white glue in a mixing bowl. Add 1 cup of water and mix thoroughly to form the crackle paste.
Paint a layer of the paste on top of the paint. User a thicker layer of paste to make wide cracks, spaced further apart, or a thin layer to create small cracks, close together. Varying the thickness of the paste applied will create a more natural effect.
Allow to dry until tacky; do not let the paste dry completely.
Paint the top coat of paint over the still tacky paste. Cracks will form in the top layer of paint. Use a water based paint for the surface to crack properly. Latex based paints stretch, so they don't crack.