Quoted Message: Thank you for posting.What subjects might you need in the future?
It's hard to say. Usually I have an idea for a book in mind and then I go searching for images that I think will convey the feeling and the atmosphere of the novel's content. Even better if the image happens to contain specific elements of the story itself. It's mostly just a gut feeling; when I've found the image that works it just sort of jumps off the page at me.
I mostly write thrillers. Horror, post-apocalyptic, psychological, even some sci-fi. When I consider images for a cover I look for images that aren't terribly busy, so as to not distract or overwhelm the reader. I also make sure I can overlay the title and author text without obscuring the subject.
And I rely heavily on the keywords while searching. Not only the subject (city, forest, sky, road) but also the color (red, blue, black, green) and the mood (dark, scary, desolate).
Wish I had a more scientific method that I could better articulate. As it is the process is whimsical at best. :)
Thanks again for the wonderful images! It's nice to know that my books help support other artists.