For motivation to finish a manuscript, it's fun to create an image of a book cover to go with your story. But for someone serious about putting together art for a novel, finding just the right photo and adding the text can be tough.
Click on the following link to see a video of a photo session for a Viking novel. They spritzed the male model's hair to make it look, well, rather messy and the author did get to attend. I think she enjoyed it—judging by her smile.
https://www.youtube.com/watch?v=4EcVz1vSMkE
To see how they add the background, check out the following link.I also liked watching how much the model talked as she was made up.
https://www.youtube.com/watch?v=-XKSW83YKrU
Some writers simply go to an online company and select a cover. It's that simple. To see how one company displays their covers, the prices, and how easy it is to buy a book cover, go to: http://bookgraphics.net/pre-made-ebook-covers-2/