Mistake #1: asking for the "how" instead of the "what".
Weak prompts sound like a to-do list for an intern: "Write the HTML for a hero section. Now add a navigation bar. Now create a button." You turned the smartest model available into a typist — and limited the quality to what you know about web design.
Instead, describe the finished work and who it’s for:
✗ "Create a website with a header, hero image, services section, and contact form for a roofing company."
✓ "Build a website for Apex Roofing in Dallas that makes a homeowner with a leaking roof trust them in 5 seconds and call. It should look like the biggest, most established roofing company in Texas — even if they're a team of 6."
Same request. The second gives the assistant room to make a hundred good decisions you never would have thought to ask for. Note that it also says how the thing should feel—the assistant is very good at translating a feeling into design, pacing, and details. The person who got the viral spaceship prompt literally described their dream, not a spec sheet.