[ _ ] Details are scratched into the clay surface or painted on it in different colors.

[ _ ] Oxygen is introduced into the kiln, turning areas on the amphora without slip red while areas covered with slip remain black.

[ _ ] A design is sketched onto the vase with charcoal.

[ _ ] The vase is fired in a kiln, turning first red and then black.

[ _ ] Slip (clay thinned with water) is applied to areas of vase the artist wants to appear black.