Is there anything particular about calligraphy seals?

Generally speaking, the author's signature is essential, and it can also be the seal of the number and the seal of the restaurant. . The signature seal can be divided into two names or a seal with a single name. However, it is still not standardized to leave only the surname stamp. In addition, calligraphy is also ready to receive the first chapter, which generally falls between the right side of the first word and the second word in the vertical text and the right side of the first word in the banner.