Foamcore base. Plaster Bandages cover all foamcore. When dry, 2 coats of plaster of paris were brushhes on. Sponge painting with latex paint gave the illusion of marble structures with the same technique to create the hundreds of patio stones. I did 5 different textures on large sheets and then cut them to 1 cm X 2 cm stones. Plastic Flowers from dollar store are hot glue gunned to the plaster structures.