Is this calligraphy format right?

First, there are no spaces in the text, starting from the first box on the right hand, and there is no punctuation. Second, the inscription is smaller than the text. Third, it is more appropriate to make a signature below one third of the text. Fourth, the signature should include or exclude the date, writing place, author's name, seal, etc. For example, in the year of Renchen, Meng Yue also wrote a book in "Cuizhuxuan".