Being overly controlling is a disadvantage when your book is being published.
When you publish a book its easy to fall into the trap of trying to control every aspect, from choice of illustrator to the look of the pictures and the cover, to the title and design as well as the marketing plan.
Most editors loathe writers who demand that their word is law. Writers who fight the editor over every suggested text change, who complain about the illustrations and refuse to compromise and resist suggestions made by marketing are impossible to work with.
If you get a reputation for being hell to work with, editors think twice about publishing you again. Word gets around, and you have less chance of being published by other publishing houses too.
Publishing is a collaborative effort. Your publishing company employs experts to ensure the sort of book that will reach the target market and get maximum sales. And all of those experts know more than you probably do about editing, illustrating, book design and marketing.
So be flexible and collaborate. It's to your advantage.
