The canvas is stretched over a wooden frame using a cord that allows tension to be adjusted after the cloth has been sealed with a moist mixture of chalk and gesso. The surface is polished with a smooth stone or glass, until the underlying texture of the canvas is no longer apparent. The design for the painting is then drawn directly onto the taut surface using charcoal or pencil. Once the initial sketch is complete, the lines are redrawn in ink and the details are refined. Colours are applied, beginning with the distant planes of the painting and completed with gold embellishments. When the painting is finally complete, it is mounted in silk brocade.