One of the beauties of self-publishing is that, if you don't like something, you can always change it. You don't needs meetings and permission from a publisher. You are the publisher.
Recently, I changed the covers on a few of my books. The first was a nonfiction wedding ebook I published in 2012. The new cover looks like this:
I also re-did Guest of Honor with this one:
But I need to be completely honest--I don't like this one the best. It's better than before, but I'll still be looking to change down the road a bit.
Try out various artists, to see which one resonates with you or not. Just don't be afraid to change something. That's what being a self-published author is all about.