Use the pliers to give the disk a gentle curve. (Note: you can't hammer the metal using a punch as shown in Part II since this will remove some of the depth on the texture.)

Torch fire one or more light coats of colored transparent enamel on the disk until achieving the color you want.
Note: If you find the colored transparent enamel is too dark and hides the texture, use a mesh size sifter with smaller holes. I normally use an 40-mesh sifter for enameling; however, I often use a 150-mesh sifter for this step. In my opinion the layer of color sifted through the 150-mesh sifter is less intense in color due to the smaller grain size and it looks lighter. If the color is too light, I can always add another coat.

If the edges of the disk are rough, use an alundum stone, file or sand paper to smooth them. This will also help prevent chipping.

Then I sifted a coat of Turquoise over the entire disk using a 150-mesh sifter and fired the disk.