Step 4: After paint is dry (since it's acrylic, this is no time at all), brush a watery wash of burnt umber over the entire painting. This is not for the faint of heart, but trust me. Do not go to lunch, or walk the dog, or even take a prolonged bathroom break at this time! WHILE THE WASH IS STILL WET, gently wipe off excess with a damp paper towel.
You will see that the burnt umber has a unifying and calming effect on the entire painting. The poppies, painted in cad yellow deep, cad orange, Napthol red, are almost too bright without the wash.