She was a very good model. Its fascinating how difficult portrait painting is. I find it more difficult than any other subject, including life drawing. Its something to do with trying to capture somebody’s personality, which I think is more than a simple likeness (in itself hard enough). Sometimes you can sketch someone really simply, just a few lines, and it is unmistakably them, other times you can labour over a painting for hours and it evades you. I like watercolour for portraits, because you are forced to simplify and minimise fussy detail.