Sand the surface of the furniture to be crackle painted with fine grit sand paper if necessary to strip away any peeling old paint or rust, then clean the furniture surface thoroughly with a sponge and water so the paint and crackle glaze adhere properly.
Fill any pits in wood furniture with wood filler and apply a wood sealer before continuing with the crackle painting technique; apply metal primer to metal furniture before continuing; sand plastic furniture with fine grit sand paper before applying the base paint and crackle glaze.
Apply the dark colored flat base coat to the furniture's surface with a paint brush or foam roller and allow it to dry completely. Apply a second coat to cement or masonry furniture, wood and plastic furniture and allow it to dry completely before continuing.
Cover the furniture in a thick coat of the crackle glaze using a foam brush. Allow the glaze to dry completely, or over night if possible.
Paint the lighter colored top coat of paint over the dried glaze with a brush and allow it to dry completely. The crackle effect is achieved as the top color dries, thus a thick top coat results in larger cracks, a thinner coat in finer crackling.
Seal the furniture by apply an even coat of clear, acrylic sealer to protect the new crackle finish.