How to write seal script?

The seal script of the word "book" is as follows:

Seal script is a general term for big seal script and small seal script. The brushwork is thin and powerful, with many straight lines. There are Fang Bi, round pen and sharp pen, and there are many "hanging needles" for writing. Big seal script refers to inscriptions on bronze inscriptions, bronzes and six-country scripts, which retain the obvious characteristics of ancient hieroglyphics. Xiao Zhuan, also known as "Qin Zhuan", is a common character of Qin State and a simplified font of Da Zhuan, which is characterized by uniform and neat font, and is easier to write than Shu Zhuan.