1. In western painting, you use a kind of a flat brush, but in Chinese painting or Chinese calligraphy, we use a round one.
2. When hair tip is blown so that work partly, with flat brush bang modelling, be blown ahead or to side-blown, depend on your hairstyle need.
3. Pat it on with your finger or a small, flat brush.
4. Brushing: Small areas on very rough material may be treated using a flat brush or a roller(which may be fed continuously with an airless pump).
5. Facial hair is painted in a portrait with a flat brush.