First of all, let me tell you something about the writing brush. Brush like a soft pen. It was difficult to master at first. But if you practice calligraphy every day for a long time, you will see gains. The pen tip is often used for fine strokes and is the beginning of writing. Hold your breath while lifting the pen. That is to say, temporarily stop breathing, which is especially important for beginners, otherwise they will tremble, and the written words will be untidy and not vertical. When carrying a pen, you should grasp the nib and the heel well, and the two should be combined with each other. I suggest you learn from copybooks. Liu Ti is a good choice. When lifting a pen, your wrist should be flexible, your head should be straight, and your body should be slightly bent. Hold your breath and don't worry. More importantly, it is not disturbed. You should master the strokes such as point, press, splash and skimming. If you want to practice calligraphy, the most basic thing is to have a good pen.
Of course, the most common and practical method is to copy some copybooks and strengthen practice.
You can try this to practice the copybook and style of Liu Ti or Ou Yangxun.
First of all, I suggest you practice some regular script copybooks, and ensure the correct strokes and posture in the process of writing.
Relax your whole body, exert strength on your wrists, and lift, press and pause well.
Also, we should know more about and think about the shelf structure of words.
Then, level your own; I think it should be effective to understand the imposition of temporary words for some time.
Just started practicing like this. I hope my suggestion can give you some help!