[header] How to write a book proposal [title] Pick an appropriate project. [step] Generally, books that are published on proposal only are nonfiction books, textbooks, and children's books. Usually, poetry collections, novels, and collections of stories are not submitted in proposal form, because those forms are more about the aesthetics and execution than the topic. 
Presses regularly look for projects to invest in that address topics or issues that they're interested in. [title] Pick a subject area in which you have credibility.