This is the hardest part, and it’s a behavior change, not a prompt trick.
Send the task. Close the tab. Make a coffee. The assistant does its best work in long, uninterrupted runs—it plans, builds, tests its own work, and fixes what’s broken. That Pokémon demo everyone shared? Fifty straight minutes, with no human input. That’s what you’re paying for.
Every time you interrupt the work halfway through to "check on progress," you’re the client who calls the contractor eleven times a day. You don’t get a better house. You get a slower, more defensive one.