Have you ever written a story that you just couldn't seem to sell to anyone but loved anyway? I can't even tell you how many years ago I started work on a story about a boy named Abelard, his Gran-Daddy Gill, and a cake that tasted like summer. At one point, Knopf had the manuscript for six months and seemed very interested; the art directors, my editor told me, were "salivating over it." Very exciting--but in the end, Knopf said "no." Then Random House (London) had it for months on end and even commissioned several artists to do sample illustrations. But again, in the end, RHUK said "no" as well. By that time, so much time had passed, and the picture book market seemed in such disarray, that I stopped shopping it.
Then I learned how to publish my out-of-print romance novels as ebooks and started to think, "Why not Abelard?"