The progress of practicing calligraphy is practical. Practical Chinese characters are practiced faster, but whether they look good or not is another matter.
Practicing calligraphy is a continuous climbing process. If you don't have the basic skills of regular script, you want to start directly from running script, which is also quick success and instant benefit. I advise you not to practice.
You can try if you don't believe me. I recommend it to you. First of all, a celebrity is not necessarily good at writing. Don't be fooled when buying copybooks. I think Qian Peiyun's copybooks in the market are worthy of reference, followed by Tian Yingzhang. In fact, it's best to look for ancient copybooks. Anyone can do it, and better than his contemporaries.