1 Hold the pen with solid fingers, weak palms, hard fingers and free wrists.
2 You can't write fast, and you don't pay attention to the ups and downs and the return of the pen. Most fonts are very particular. Taking running script as an example, quickness comes from the natural and structural continuity of running script strokes, rather than the deliberate "twitching" when using the pen, which is called virtual quickness.
There should be changes in font structure, prominent parts and the need for changes and exaggeration.
When writing fine print, we should pay attention to the fact that the local prominence of the strokes is not obvious. For beginners, we should pay attention to keeping an eye on the strokes all the time and adjust the intensity in time.