The method of painting with a pen is basically the same as that of an ordinary brush, except that before painting, the pen tip should be shaken and pressed to let the paint flow to the pen tip. Don't squeeze hard when writing, so as not to leave small dots at the stroke.

In the process of painting, when two colors are superimposed, it is necessary to wait until the first color is dry before covering the second color, otherwise the two colors will be mixed and dirty.