When weather conditions drive me inside, I like to experiment with various aspects of drawing and painting in watercolour. This one concerns values that one can build-up with glazing; overlapping layers of watercolour washes. I found this exercise on a website by David Rankin. It is a still-live of blocks on a shiny surface with a light source positioned to get the various lights and darks, shadows and reflections.
It is a fun exercise on a half sheet of Strathmore paper, using 4 different colours and a 3/4″ flat brush. The diagram in the top left corner shows the procedure.
One starts with a thin wash over the whole picture leaving out the whites. Next, under “B”, the background and shadow surfaces receive a wash over top of the first one, and so on; you could call it “paint by numbers” to get the hang of it. I repeated the same process a few times as I like to play with colours on good quality paper, using the backside of an old painting that did not work.