I 17, graduated from high school, and it is difficult to improve my hard pen calligraphy. What should I do?

Judging from the font, 17 years old, the same age, really good handwriting. As the saying goes, the snake has a snake path, and the mouse has a mouse trail. This is about laws and rules. Although I have copied it for several years, I feel that I have not learned the law. For example, there is a problem with the word "you" or the order of strokes. Read more posts and study the trend of brushwork. I suggest buying a copy of Zhong Shaojing's Ling Fei Classic. But the path I personally recommend is to practice calligraphy, starting with calligraphy paste. As soon as the brush calligraphy is written, the hard pen calligraphy will naturally come up, killing two birds with one stone.