I will give you a five-part outline that you will use to produce a 15-to 25-page document on How to Write a Nonfiction Book Proposal. From the outline, you should expand on topics like include sample chapters. You might add how to choose the most arresting chapters and how many to include, and what the purpose is (to show that you can write among other things). After reviewing your credentials showing that you do have writing experience, I will upload the outline in pm.