In addition to getting the attention of potential readers, a book cover needs to say something about the content of your book.
For those of us writers who are not able to design a good book cover, we might want to hire the services of a professional.
Look in the comment section to find book cover illustrators, visit their site and their portfolios to choose the best one for you.
To illustrators: Please post a link to your website and portfolio and a word about your specialty as a comment below.
Update September 9th, 2013 : a Beta stage start-up to help writers and illustrators meet is opening soon