Worked from the top down as I held this 6 inch panel in my left hand. Painted in the car with dome light on my panel and battery light on palette in passengers seat. This is a messy prospect but an interesting feeling. Almost Voyeuristic. Not quite plein air but viewing the city from a private space and trying to capture it on the street. I'll be doing more of these. Have to figure out how not to destroy the interior of the car!