Paint the outline of the butterfly wings, trying to get both wings more or less symmetrical (this will get easier with practise). Paint from the side of the ridge of the nose, up and across the forehead, above the eyebrows. Then down from the nose past the mouth almost to the end of the jaw. Now 'join up' the two lines using as much of the cheek as possible. Don't worry too much about how much space you leave for the butterfly's body at the nose; you can always paint over part of the wings if necessary.