I sketch models four hours a week. I have never considered that a key part of my artistic output but I enjoy the challenge of sketching with Chinese paper, ink and brushes. It is quite a difficult medium to control in that situation. I experiment with colors, work on powerful lines and brushwork and sometime just let the ink take over and see what it will do. Sketching four hours a week means my pages of nudes pile up. Sometimes they seem finished sometimes I work them over. This the grey splotch on the head of this nude was an accident but I kind of like it.