The posture of holding a pen. Don't use too much force when holding the pen. If you push too hard, it's easy to make mistakes and hurt your pen. And you need to get a relatively suitable place, such as 1/3 of the pen.
Sitting posture. Sitting posture must be correct, so that the words written can be correct, otherwise they are all crooked.
The paper must be placed correctly, otherwise it will also affect the beauty of the words and practice calligraphy badly.
Besides paying attention to these skills, you must practice more. Only by practicing more can your handwriting become better.