Sometimes writers and illustrators question their ability. That’s normal and keeps us pushing for excellence. However, they shouldn’t question their saleability. That is for someone else to do, so let it go. There are people who know as much about selling as you do about creating, so you are in safe hands…
Teamwork is what makes a book succeed or fail. Besides the writer or illustrator, the editor, art director, designer, marketing, publicity, production and printing team members share the responsibility of making an idea the best book it can be.
This means you can concentrate on your special skill, safe in the knowledge that everything else is under control. No one knows for sure how many copies of a book will sell in a given period. You might think yours is the best idea ever, only to find its not a commercial success. Or, you might question why your idea is being taken apart, interrogated so aggressively, only to find on publication day that it is going to be a massive success…. Each member of the team has a valuable contribution to make, raising the overall quality.
Within the team there can be as much conflict as harmony; Editorial and design opinions are historically tense (editors often want more words, designers less). Or, authors who have a strong conviction their words are the exact right ones, and editors who weigh that conviction against sales and marketing insights. And no one is happy when sales people dismiss a cover that they all love. But the right thing for everyone to do is step back have a think and come back with a different option.
So, when you are finally ready to present your masterpiece to a publisher, you should also be ready to let go of your emotional attachment to it. Instead, be open to what your new team will have to say. They will probably point out things you haven’t considered and, more importantly, remind you that presenting your idea isn’t the end of the book building process but the beginning.