I was recently asked to help illustrate a children’s book and used my Art Rage software to do it. If you are working on a project that needs illustrations this is the way to go. The learning curve is short and the results are pretty cool.
I found a fun online drawing program that could be used to design a book cover. I used it recently for my ebook on Amazon. Check it out at http://www.gamesgames.com/game/Pencil-Madness.html. The image below shows a sampling of what it has it offer.
What I really like about it, is the fact that you can down load the picture as a jpeg to your computer.