1. Sketching broad veins
For a green marble finish. spread a base coat of green paint and then a glaze tinted a lighter color on your workpiece. Dip a bird feather into the glaze and draw it diagonally across the surface to produce broad marble-like veins. Smooth and soften the pattern by brushing the veins lightly with a marine sponge, a badger softener or a soft cloth. While the surface is still wet, prepare another batch of glaze and tint it lighter than the first coating. Apply and feather this glaze the same way you did the first one, but this time, make the veins cross over the ones already in place.
2: opening up the pattern
To produce a mottled effect on the surface, dip a clean, stiff-bristled paint brush into a container of mineral spirits. Holding the brush a few inches above the workpiece, run a gloved finger along the bristles, moistening the veins with a fine spray.
3: Completing the pattern
Dip a bird feather in white artists’ color and allow the excess to drip off to prevent any blobbing. Then use the feather tip to sketch in a series of thin white veins within the broad veins already on the surface. When all the fine veins have been painted, smooth, varnish and polish the surface.
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