During each day's painting, colours which have been mixed are revisited and recorded. This is done in an A6 sketchbook on un-primed paper with little thought given to how each composition should turn out. Areas of the paper are masked and the paint is applied. Occasionally references are made in the margins, but more frequently there are none. The notes which do appear refer to either the colours which have been mixed, the paintings those colours were applied to, or the date they were applied.
Occasionally, these sketchbook images are then further resolved into concluded paintings.