You wrote a complete book, so odds are you have a fairly clear concept of That which you want your book cover to appear to be. If This is actually the circumstance, why hire a designer once you can make a book cover yourself? Disable any browser extensions that can https://whitemagicstudios.co.uk/blog/creating-a-masterpiece-for-readers-through-the-art-of-book-formatting-and-layout/