Start by giving it a simple summary of the app you want, and then you have to refine it from there. Chorus and each of the projects you mention started with one prompt to get a good starting template, but then the rest is refining the result with further prompts. Chorus for excample took another four days of hacking on it (vibes) after the first prompt as we started adding new features and improving the UI. This part takes the longest, but it's what turns the generic first result into something with human ingenuity behind it. Use `stacks agent` to do these refinements, it's the best agent for these projects.