The author says:
He’s a volatile, genetically-engineered slave, longing for peace. She’s a spoiled princess who wants to reclaim the throne and save the world. He must help her. Princess Aurelia is left for dead on the frozen planet of Quisquiliae. There she meets a dragon warrior…the last of his kind. The Dragon Warrior, who had also been left for dead, thought war and servitude were behind him. But his short-lived peace is shattered when the fiery young woman revives and starts telling him what to do. He submits himself to her, as is his duty as a slave to the royal family but, deep down, he blames her for everything he is and all he has been forced to commit. After the Dragon Warrior saves Aurelia’s life, the princess is duty-bound to return the favor. Her course of action shocks the Dragon Warrior as he tries to come to terms with his true nature and identity. The Dragon Warrior and the princess walk the path of honor together but it will take a confrontation with space pirates, a supply run for weapons, a star ship battle, a ground skirmish, a rescue mission and, ultimately, an encounter with evil itself before they find out where this journey will end. An edge-of-your-seat science fiction adventure filled with innocent, romantic longing, The Dragon Warrior and the Princess breaks from the typical military space opera mold. Shaped by the theme of mercy verses justice, where shades of grey polarize and resolve into right and wrong, The Dragon Warrior and the Princess displays the power of good working through its heroes to give the world hope and a future.
I know I’m not the target audience for this, which is okay: It means I can look at it strictly from a design standpoint.
The first thing I notice is that, in the thumbnail, “The Princess” is almost invisible, and even in the larger version those words tend to disappear into the similarly colored background. I think you’ve established the color scheme well enough in the main image that you can use contrast to make the text stand out — maybe a deep cherry red, that starts strong at the bottom of the title and fades toward the top.
I also think you’ve got too many fonts, exacerbated by the unsuitability of the typewriter font for the byline. (You should ditch the font that “The Princess” is rendered in; for one thing, the kerning problems between the uppercase and lowercase letters seem almost too great to correct.)
One other thing, regarding the layout of the image itself: The nearest part of the space-station-thingie, which is the natural focal point of the structure, is obscured both by the title and the fade into the portraits. Also, it’s angle can cause confusion among viewers who maybe think initially that they’re looking at some sort of castle from a high angle. If you vertically flipped the space station, the nearest part would be more easily seen near the byline, and the castle confusion would be lessened.