Genre: Fantasy Romance, Young Adult Color Preferences: Deep blues and greens (ocean), contrasting warm oranges and pinks (representing the romance and the human element), with darker, muted tones for the villain in the background. Imagery: A central image of a human teenage girl, with windswept hair, passionately kissing a mer-octopus. The mer-octopus should be depicted with a humanoid upper body (to emphasize the romance) and multiple tentacles gracefully wrapping around the girl, showcasing both intimacy and his otherworldly nature. The tentacles should be detailed and not appear slimy or monstrous. In the background, a shadowy figure (the evil brother) should be subtly visible, perhaps lurking amongst rocks or coral, creating a sense of looming danger. The overall scene should be set underwater, with visible coral, fish, and perhaps a glimpse of a sunlit surface above. Text Style: The title "Ocean's Sweethearts: The Mer-Octopus Saga - The Prince's Promise" should be elegantly designed. Consider a flowing, slightly whimsical font for "Ocean's Sweethearts," perhaps with a subtle wave-like effect. "The Mer-Octopus Saga" could be in a smaller, slightly bolder font, and "- The Prince's Promise" could be even smaller, almost like a subtitle. The font color should complement the overall color scheme, perhaps a lighter shade of blue or a warm gold. The author's name should be placed prominently, but subtly, below the title. Additional Elements: Consider incorporating subtle glowing effects around the mer-octopus or the girl to enhance the magical aspect. The background should be detailed enough to be visually interesting but not distracting from the central figures. The overall mood should be romantic, yet with an underlying sense of mystery and danger. The cover should be visually appealing to the target audience (young adults) while also conveying the fantasy and romance elements of the story.