After changing pens, you need to practice pen control from the beginning. Horizontal and vertical, one left and one right, gradually familiar with the control freely. However, your appreciation of Chinese characters will not change, and will naturally stay before the change.
The improvement of the beauty of trial practice is to gradually change your understanding of each word structure by copying copybooks. Which needs to be long and which needs to be short, and the height of the side needs to be mastered word by word.
As for whether you need to change your pen, if your writing posture is not awkward, the writer will not be tired for a long time, and if you write flexibly, there is no need to change your posture. Su Shi's "On Books" said that "there is no fixed method for writing", which also shows that the posture of writing a good word is not decisive, as long as the posture is not too outrageous. The correct way to use the pen may make you more flexible in controlling the pen. But after writing for a long time, most of them can achieve the same flexibility. I don't know if I can understand this.
It is very easy to correct the posture of writing. Just write Baidu video keywords. After learning the posture according to the video, you must forget the previous wrong posture and never use it again. It takes a little perseverance to change a habit. Just remind yourself more when holding a pen.
My own handwriting has been changed, but it's useless. It is too difficult to improve the aesthetics of Chinese characters, and the writing is as ugly as before. Maybe there will be more room for improvement in the future. I can only comfort myself like this.