1.   Brush in hand, he raised his entire arm to change the contour of a charcoal line faintly visible below a wash of white.

2.   Guided by this charcoal line, the artist then swiftly paints in the illusion of drapery folds.

3.   The water level is kept at the charcoal line, with liquid plant food added during growing season.

4.   Black charcoal lines seem to dance over the painted surface.