So you're one of 20 million Americans who want to write a book. If you've already written a manuscript, chances are you're looking for agent representation. In the past few years, as an editor and literary consultant for www.TheOmnibus.org, I've had the opportunity to read more than 1,000 book proposals. Most, I'm sad to report, were inadequate because the author did not follow a few, very simple guidelines. Before you complete your manuscript and send it on its way to prospective literary age.