I'm having a problem with my right arm so decided to take the Tree of Life into my kitchen where I could lie the work down on the table and try a different painting position (usually I stand in front of the easel with the painting resting in a near vertical position). This didn't work very well for my aching arm, however it did wonders for my inspection of the painting. Seeing the piece in natural daylight, away from the bright halogen lights in my studio, I was able to see ridges and bumps on the work that weren't evident in the studio - textural flaws that detracted from the imagery. The lighting in my studio was such that it flattened these flaws to the point where I couldn't see them, even with my reading glasses on. I toted the painting back to the studio and attacked it with fine sandpaper - the result is that I shall have to repaint the face, except for the eyes and lips.
This is a source of great frustration for me because I had just completed the face to my satisfaction, after a several weeks of much pondering and making slight alterations in shapes of features and colouration. The positive side is this will save me no small amount of embarrassment should the painting be juried into a show and put on exhibition in lighting that reveals the flaws.
Here's the work as it appeared before my lady had her extreme dermabrasion treatment:
She's not feeling or looking very well just now. Perhaps she let me post her picture after she's recovered.