According to author and acquisitions editor W. Terry Whalin, this approach is backwards. About 80% to 90% of nonfiction books are sold from a book proposal. This mysterious document called a proposal contains many elements that will never appear in a manuscript―yet these details are critical to publishing executives who make the decision about publishing or rejecting an author’s project. In Book Proposals That Sell, Terry reveals 21 secrets to creating a book proposal that every author needs in order to create one that sells.