Wouldn't you love to see your book as a comic book?
I know I'd love to see my time travel as a graphic novel, as they call comic books. I tried to hire a graphic artist or cartoonist and see if he or she would be interested in a 50-50 split in the royalties. I e-mailed about 30 cartoonists and only one replied. She told me that cartoonists don't collaborate with indie writers as cartooning, especially graphic art, takes a lot of work.
The only way to make your book a graphic novel with voice balloons, thought balloons and captions is to spend a lot of money or maybe learn to do it yourself. You may be able to take some basic classes without getting a degree. Here are some links for online art schools to learn animation/cartooning:
If you don't want to go to art school, you can pay a graphic artist to maybe draw a few illustrations for your book. If it is an e-book, the publisher may offer hyperlinks to the pictures instead of inserting them into the book's content. Here are some links for cartoonists for hire:
For an idea of what you get for your money, click here:
If you are a cartoonist or know one who wants to offer indie writers a good deal, post a comment.