I'm working on my values, especially with the whites. I've been following a tremendous artist, Colin Page www.colinpagepaintings.com . I notice he uses pure white, or what looks like pure white, minimally. The whites I've used are mixed warm and cool whites. There are so many in this painting which is making it difficult for me with the values. I'll certainly learn a lot doing this one. I'll then use straight white when I'm ready for the few highlights.