Not a UI/UX designer, but I’ve been getting much better results by using:
- Refero for real product/design references. I use it to give the agent a clearer visual direction. You can also browse the site to get a sense of what inspirations you like.
- Impeccable.style for pushing on hierarchy, spacing, copy, motion etc.
Here’s a before
and some variants i generated after with those tools
I wrote a short post with more details here (How to give agents design taste | Lunch Pail Labs)