More in Windows Walls and Doors
Apply a base coat of paint and allow it to dry (the deep brick red used as in this example replicates the red-clay color of historical wall coverings).
Apply a coat of sizing to the entire surface.
Carefully roll a sheet of gold leaf onto the painted surface. Continue with each sheet until you've covered the entire wall.
Use a dry paintbrush to brush and tap the gold leaf into the crevices of the embossed surface. Tiny flakes of gold leaf will crack loose as it is tapped into the surface.