I like this portrait. Very simple, very subdued. The chair is rendered with the most minimal clues as to its presence. Her feet anchor the lower right corner, and the strong, repeating diagonals in her summery dress and her shawl create a strong visual interest for her face. She's shown against a simple, dark, natural backdrop, with some dark corners, and the one light corner down by her feet. She is lighter than the background, and so she stands out very nicely. All in all, this is a very successful portrait. This shot is going to hold up well for a long time.