For any of you who think that once you sign a book contract and send the manuscript to your publisher the process ends, this might be a shock for you. There's more...much more. Unless your name is Tom Clancy, there'll be edits and rewriting. There are rumors in the industry that Clancy has a clause in his contract that essentially guarantees the publication of his manuscripts without any editing. But I'm not Tom Clancy, so I have some work to do.
In the current Writer Unboxed, Juliet Marillier blogs about the structural rewriting that she's having to do for her current novel. That may involve cutting scenes, adding others, changing character arc, and in general performing an overhaul on a manuscript that the author undoubtedly thought was perfect when he/she submitted it. Tough, but the end result is supposed to be a tighter story and a better read. And that's what every novelist wants.