The author says:
Book 2 of the Abrahamha’s Strays series: Terminally Human. Sci-fi set in the 25th century. Large cast. Symbiotic microorganisms in humans grant them longevity and rapid healing (the thingy in the center is supposed to represent how a few can perceive them). A few have extraordinary powers, that come with considerable limitations. The first book had solved a mystery and rescued an ancient hero. This book is a quest for her original attacker.
Nathan says:
I haven’t looked up Book 1 to see how you’ve maintained the branding, because even if Book 2 follows Book 1 visually, it’s still got a major problem:
I CAN’T SEE ANYTHING.
Remember, most readers are going to see your cover first at thumbnail size, with other books’ thumbnails on either side of it. And what do I learn about your book from the thumbnail? Nothing. I can’t read the title, I can’t recognize any image. As a reader, I might not even register that your book cover is there, because of more intelligible and attractive covers to the left and right.
Even at full size, the reflective tricks on the title only add another half-second to my comprehension, which is a half-second you can’t afford. The “thingy” doesn’t stand out from the background, and the one intelligible part of the image — the human silhouettes at the bottom — blend into their background.
You need to start over with a single question in mind: “What can I convey to my target audience in the limited time and real estate of the thumbnail that will get them to stop and find out more?”
Other comments?