The best way for me to illustrate this point is to show you how top literary agents sell books to publishers... because that's the process you need to model. (literary-agents.com)
This allows agents to pitch books face - to - face (sometimes with the author present), submit books to publishers simultaneously, hold auctions, and get deals done faster. (literary-agents.com)
Want to sell your self - published book to a publisher? (authoronestop.com)