I have two principles in site painting: don't quit it til you shit it; and always follow the light pattern laid out in your pre-oil pencil sketch. Painting at the horse barn this evening the light shifted viciously in the last half hour. What to do? I violated 2 and went with 1. I finished with a steaming pink mess. The teen loves it and claims it and says I can have the other one I hadn't given her either back now.