I tried to use tape, but that doesn’t really work, so I am painting very slowly in order to get the most accurate images. Oh yeah! The 3 level readers help too. I do not wear glasses other than when I’m doing this detailed painting. I first paint a rough sketch of the shape in order to have a general location and shape. One of these shapes can take up to 12 hours to paint on a larger piece. This piece is 8’x4.5′.