First, it is better to use Song-style characters and imitation Song-style characters in official documents. Personal seal can be Song Style, Imitation Song Style, Regular Script, Official Script and Running Script (mainly easy to identify, using standard characters);

Second, calligraphy and painting. This is divided into negative engraving and positive engraving according to personal preference. Inscription is to remove the words and cover the paper with white words. Lettering is to leave the words and borders, and the rest are cut off sharply. The words on the paper cover are red. The fonts of calligraphy and painting seals are generally based on Xiao Zhuan, and some are engraved with Zhong Dingwen or inscriptions.

Third, if you are interested in calligraphy and painting seal cutting, you can look at the book Qi Baishi Seal Cutting and Its Knife Method edited by Wang Xingyu.