I've just come from Carol Marine's workshop at the CORSE GALLERY in Jacksonville. I think this portrait of her, though not clear, is apropos as her students DO SQUINT a lot in class to identify values, or hard and soft edges. As a biped mammal you'll recognize it as a standing female at her easel. Looking more you see her shoulders are draped, her hair is curly, she's in the gallery and there's a brightly illuminated still life to her left. There's enough visual information for your brain to complete the picture.