What problems should be paid attention to in writing brush strokes, what skills are there, and how can we improve the level of calligraphy?

1, when writing, the nib is always forked when it is finally pointed out, like a brush. Sometimes the pen tip is half written. Is that the pen?

2. When writing skimming, it's easy to write too short if the speed is fast, or the head is thick and thin. When writing slowly, there is always uneven thickness or no strength. I don't know what to do. Also, should the center write when writing?

3. Should the pen always stand upright? I think it's easier to write about Fang Bi, but I don't know if this is correct.

Do you need to add some water to the ink? How much ink is appropriate? I always feel that I can't grasp the ink quantity. Although I knew I couldn't fill it out, I unconsciously filled in the whole pen when I posted it.

5. The strokes are often not very smooth. Some Mao Mao stabbed them. Is it ink, pen or me? The center will not be smooth when he writes. )

6. How clean is the brush after use? Should I just wash it or should I wash all the ink off it?

7. When you write, your hands don't shake much, but the strokes will be uneven. How long will it take to correct them?

8. Are there any particularly good calligraphy teaching videos online?