I’ve written about the art and science of covers:
Covers are tricky. They must convey an idea through an image and they need to do it quickly. When potential readers browse the front tables of bookstores, they probably devote at most one or two seconds to any given title, as they decide whether to pick it up or move on. A cover must grab their attention, let them know if it’s fiction or nonfiction, what genre or category it belongs in, and so on.
My cover needs to say that The First Assassin is a historical thriller set primarily in Washington, D.C. during the Civil War era. It has less time to communicate this message than it took you to read this sentence.
I’m happy with what AmazonEncore has done. It’s a striking visual that ought to catch a lot of eyes.
UPDATE: This is no longer the cover. See the real new cover here.