Brush on a background layer of long, messy stripes using yellow ochre and burnt umber latex paint. Keep the stripes diagonal and irregular, and include some wave shapes for swirls in the marble.
Use a clean, damp brush to blend the wet stripes of paint together. Clean this brush off regularly. For added texture, wad up a piece of cellophane and press it lightly into the wet paint.
Allow the paint to dry.
Lightly tap both colors of paint onto the surface with the bristles of the brush to add more texture. Lightly streak them with a clean, damp brush to soften them.
Allow the paint to dry.
Paint on veining with yellow ochre and a small brush. For a realistic effect, hold the brush loosely between your fingers and constantly wiggle it as you paint. Look to real marble veining and pictures of lightning for inspiration.
Allow the paint to dry.
Mix 1 part white glaze into 3 parts clear lacquer.
Apply the tinted lacquer to the entire marble surface to seal it. The slightly white tint will provide a cold, stone finish.