Here's a fun one that works well with sci-fi and cyberpunk. I haven't tested it yet with other genres.
(Note, this is not the same prompt of mine that is on PromptBase, this is a less complex version but still gives great results in both v5.2 and v6.)
A few variations. I'm still learning how to get the text right - only 2 or 3 images out of maybe 20 does it give me the correct spelling and without extra words. Even then it adds a second small title somewhere on the page. See the last image for some epic text fails!
90s comic book page layout, comic book design, page, vivid brilliant color and dynamic action scenes, panels, sci-fi, retro sci-fi scenes
60s comic book page layout, comic book design, page, muted vintage color and dynamic action scenes, panels, sci-fi, retro sci-fi scenes
1960s comic book cover design, full page cover with text: "DARK ASTEROID", muted vintage color and dynamic action scenes, panels, sci-fi, retro sci-fi scenes --ar 2:3 --v 6.0
1990s comic book cover design, full page cover with text: "DARK ASTEROID", vivid brilliant color and dynamic action scenes, panels, sci-fi action scenes --ar 2:3 --v 6.0
Have fun!