Ask an AI tool to "write a compelling Facebook ad for my bakery" and you'll get 200 words that could describe any bakery in any city. Swap out the business name and nobody would notice the difference. That's the real problem with most AI marketing prompts. They're technically correct, but they produce copy that sounds like it came from a template. Below are the five prompting habits we see most often, and the specific fix for each one.
Mistake 1: Asking For "Compelling" Instead Of Specific
Words like compelling, engaging, and persuasive tell the AI nothing concrete. It has no way to know what makes your offer compelling, so it defaults to generic marketing language: "unbeatable quality," "you deserve it," "don't miss out." These phrases show up in almost every AI-generated ad because they're safe, average, and vague enough to fit anything.
Before: "Write a compelling Instagram caption for my candle shop."
After: "Write an Instagram caption for a candle shop. The candle is called Porch Light. It's made with soy wax and smells like cedar and rain. The main selling point is that it burns for 60 hours, longer than most store candles. Keep it under 40 words."
The fix is simple: replace adjectives with facts. Give the AI a real detail, a real number, or a real feature, and it has something to build the copy around instead of guessing.
Mistake 2: Leaving Out Who You're Actually Talking To
A prompt that says "write ad copy for my accounting service" could be talking to a solo freelancer worried about taxes or a 50-person company shopping for a new firm. Those are two completely different reads. When you skip the audience, the AI writes for an imaginary average person, which is why the copy feels like it's talking to no one in particular.
Before: "Write an email promoting our bookkeeping software."
After: "Write an email promoting our bookkeeping software to freelance graphic designers who currently track expenses in a spreadsheet and dread tax season. They are not accountants and don't want to learn accounting terms."
Good audience details to include in a prompt:
- Who they are (job, role, or life stage)
- What they're currently doing instead of buying from you
- The specific frustration or fear driving the decision
- How much they already know about your category
The more specific the person, the less generic the copy.
Mistake 3: Treating The First Prompt As The Final Draft
Many people type one prompt, get one answer, and either use it as-is or give up and call AI copy "bad." But a single prompt is closer to a rough sketch than a finished ad. Professional writers don't stop at draft one, and AI shouldn't either.
The fix is to treat the exchange like a short conversation. After the first output, ask follow-up questions such as:
- "Rewrite this in a more casual tone, like you're texting a friend."
- "Cut this in half and keep only the strongest sentence."
- "Replace the generic opening line with something more specific to a first-time buyer."
- "Give me three different headline options instead of one."
Each round removes a layer of blandness. In our experience, the third or fourth version is almost always sharper than the first, simply because you're steering it instead of accepting whatever comes out first.
Mistake 4: Never Showing The AI Your Actual Voice
If you never tell the AI what your brand sounds like, it will default to a generic "friendly professional" tone that works fine for a bank and a skateboard shop alike. That neutral tone is exactly what makes copy feel interchangeable.
The fix is to paste in two or three real examples of writing you like, whether that's a past email, a website page, or even a competitor's tone you admire (with your own spin). Then ask the AI to match that style.
Before: "Write our About page in a friendly tone."
After: "Here are two paragraphs from our old newsletter [paste them]. Write our About page using this same voice: short sentences, a little dry humor, no exclamation points."
You can also describe your voice by contrast, which works surprisingly well: "We sound like a knowledgeable neighbor, not like a corporate press release." Giving the AI something to sound like, or something to avoid sounding like, narrows the output fast.
Mistake 5: Accepting The First Answer Without Editing It
Even a well-built prompt can still return a few tired phrases: "take your business to the next level," "in today's fast-paced world," "unlock your potential." These phrases aren't wrong, they're just overused, and using them signals to readers that the copy wasn't written with them specifically in mind.
The fix has two parts. First, ask the AI directly: "List any generic phrases in this copy and rewrite those lines to be more specific." Second, do a manual pass yourself and replace any line that could apply to a competitor's business word-for-word. If a sentence would work equally well for a plumber and a pastry chef, it needs to be rewritten with a detail only your business could say.
A Quick Test For Any Draft
Read the copy back and ask: could I paste my competitor's name in here instead of mine and would it still make sense? If yes, it's still generic. If the copy would break or sound wrong with a different name, it's doing its job.
Quick Checklist Before You Hit Enter
Use this before sending your next AI marketing prompt:
- Did you replace vague adjectives (compelling, amazing) with a real detail or number?
- Did you describe a specific audience, not "everyone who might buy this"?
- Are you planning to revise the output at least once, not just use the first draft?
- Did you show the AI a real sample of your voice or describe it by contrast?
- Will you scan the final copy for phrases that could describe any business, and rewrite those lines?
Run through these five checks and the copy you get back will sound like it was written for your business, not for the category your business happens to be in.