What are the skills of novice portrait shooting?

For beginners, it is mainly to lay a good foundation and study photography theory and practice hard. After improving their own level, they can learn other people's skills or create their own skills. Because photographers have created so many skills that they can't explain them at all. For example, Rembrandt's Run Out of Light, Butterfly Light and China's Three Chambers and Five Eyes. For example, while shooting for Churchill, he suddenly took off his cigar ... There are thousands of these skills, and you can't learn them one by one. If you improve your level, you will understand the true meaning of photography and how to better express the connotation of characters. For example, how to express innocence, childishness, sunshine, gentleness, maturity and even meanness. The picture below shows the ugly behavior of Ampere in news photography. You can't get this skill unless you are very skilled in photography.