I can’t stress enough how important the front page is. It’s the first thing readers see, and it needs to scream 'pick me up' without being overwhelming. For fantasy novels, I love when covers use bold typography paired with intricate illustrations—think 'The Night Circus' with its elegant black-and-red design. Minimalist designs work wonders for contemporary romance, like 'Normal People,' where a simple photo and clean font convey intimacy.
Color psychology is huge too. Warm tones like gold or deep reds evoke passion, perfect for romance, while cool blues and greens suit thrillers. Don’t forget about texture! Embossed titles or matte finishes add tactile appeal. I’m also a sucker for symbolic imagery—a lone key on a cover can hint at mystery better than any blurb. Lastly, always ensure the title is legible even as a thumbnail; so many great designs fail digitally because the text blends in.