Don't put needless expense into painting a head! Don't try to match tints! Rose and pearly colours blend into each other so that no one can unite them if painted separately. Keep the impression of your subject as one thing!
How are we going to make painters by lecturing to them? We are going to make questioners, doubters, and talkers. We are going to make painters by painting ourselves, and by showing the paintings of others. By working frankly from our convictions, we are going to make them work frankly from theirs.