If it is a three-foot announcement, it is best to arrange three lines of text, each line is about 7-9 words, and the third line should be left blank. The fourth line is narrower than the first three lines and is used for signature. Write down the source of the poem, that is, the name of the author and the work, and then write down the year, month, season and the author's name, such as "Wu Jia Qiu Meng, a book". If the title of the poem is too long to write on one line, you can leave two lines. The most convenient method is to directly fold the rice paper into four lines, with the first three lines writing the text and the fourth line lettering, but the lettering font is smaller than the size of the text, and the bottom edge of lettering, including the bottom edge of the seal, is higher than the bottom edge of the text.
Of course, there is the simplest way. There are ready-made pictures or books about composition in the painting and calligraphy studio or online, which can be copied.