1. First of all, you can refer to some excellent pen calligraphy works, such as the copybooks of calligraphers such as Lingfei Jing, Lu Zhongnan, and Yan Ruimin.

2. Secondly, refer to some professional pen calligraphy tutorials to learn the basic strokes and tools of pen calligraphy, with detailed demonstrations and analysis.

3. Finally, use the knowledge you have learned to practice, and finally write the three characters Zhou Jinmin.