Was humbled with this simple setup. I just couldn't get the peeled orange right. I was really looking hard to see all the color variations. I knew that temperature was crucial. My light source was warm so the shadows would be cool. I saw mostly warm. I couldn't figure it out. To mix the right orange for the peel was challenging. At the end, I stopped analyzing and just painted what I saw comparing color spots as accurately as I could. There is still so much to learn.