If you're vibe coding games or 3D assets with GPT 6 Astra, by default it'll still output pretty basic, sloppy-looking visuals...unless you use this prompt hack.
You need to include a variant of the following in your prompt.
Get it to spin up a separate critic agent, which takes screenshots of your generation at different angles and gives it a score from 0 to 10 (define what this means). Then, get it to keep looping until it achieves a score of >8.
More details in my upcoming review video.