Is it too late to sign up for any calligraphy interest class in the second day of junior high school? Actually, I think my handwriting is good, but I want to write better.

There is no need to report for class. You can watch videos online. Tian Yingzhang's is very good. The key is to practice more and think about the font of words. By the way, don't think that what I recommend to you is China's calligraphy. Hard pens are all from soft pens. I am self-taught. I also won a calligraphy competition in high school. I hope everyone will listen to my idea of spending less money to practice calligraphy. I have a good idea, support you!