I am going to use this tray which has been stenciled with a grid
as a test for different glazes, so I took a picture of the tray
with the first glaze areas in place, then posterized it
and printed it out.
As I add additional swirls of glaze, I will use a pencil to shade
in those areas on the printed copy and write the glaze name
in the borders so I know what I used where.