Spread a thin layer of Venetian plaster on either canvas or burlap, and stamp designs into the surface. Let the plaster dry thoroughly and crumple the plaster-covered fabric into as many creases as possible. Apply a colored wash that will seep into and accentuate the cracks in the crumpled plaster.
Venetian plaster crackle on canvas.
Venetian plaster crackle on burlap.