I once designed my own book cover. It looked like a ransom note assembled by someone with a grudge against typography. I thought it was edgy. It was not edgy. It was terrible, and it cost me months of sales before I swallowed my pride and hired a professional.
That experience taught me something I now preach to every indie author who'll listen: your cover is not a creative expression of your artistic vision. It's a sales tool. Its only job is to make readers click on your book instead of the one next to it.
Here are the five mistakes I see killing self-published books every single day.
1. DIY When You Can't D-I-Y
There's no polite way to say this: unless you're a trained graphic designer, do not design your own cover. I don't care how good you are with Canva. I don't care that your mate Dave has Photoshop. Readers can spot an amateur cover in a fraction of a second, and they will scroll past it without a shred of guilt.
A professional cover costs between £150 and £500. That's not an expense — it's the single best investment you'll make in your book.
2. Ignoring Genre Conventions
Every genre has visual conventions. Romance covers tend to feature couples or stylised typography. Thrillers lean towards dark, moody imagery with bold sans-serif fonts. Cosy mysteries have illustrated covers with bright colours.
These conventions exist because they work. They signal to the reader — instantly — what kind of book they're looking at. If your psychological thriller has a pastel cover with a handwritten font, you're telling thriller readers to look elsewhere. You might think you're being original. The market thinks you're confused.
Go to your Amazon category, look at the top twenty bestsellers, and note the common visual themes. Your cover should fit comfortably among them. Not identical — but clearly belonging.
3. Too Much Text on the Cover
Your cover needs three things: a compelling image, the title, and the author name. That's it. Not a subtitle. Not a tagline. Not "From the bestselling author of..." unless you're genuinely a bestselling author. And definitely not a paragraph-long description crammed into the bottom third.
Remember that most readers will first see your cover as a thumbnail roughly the size of a postage stamp. If they can't read the title at that size, nothing else matters.
4. Wrong Fonts
Comic Sans on a horror novel. Papyrus on a literary thriller. I wish I were making these up. The font on your cover communicates genre and tone before a single word of your blurb is read. A serif font says literary or historical. A bold sans-serif says thriller or action. A flowing script says romance.
Use the wrong one and you're sending a confusing message to every reader who lands on your page.
5. A Cover That Looked Good in 2015
Cover trends evolve. What looked modern five years ago can look dated today. If your book has been out for a while and sales have dried up, take a fresh look at your cover in the context of what's selling now in your category. A cover refresh can breathe new life into a book that's been gathering digital dust.
The Bottom Line
Your cover is the front door of your book. If it looks uninviting, poorly maintained, or like it belongs on a different street entirely, nobody's coming inside. Invest in it. Get it right. Everything else follows.