The trap with support prompts is asking for the finished thing. Ask for options instead, then bring your taste to the edit.
Make the output reviewable
Lock the parts that never change and leave one slot for the variable. Now every run shares a family resemblance instead of starting from scratch.
Anchor to one reader
Write down what you never want as explicitly as what you do. The exclusions often do more work than the instructions.
Write down what you never want as explicitly as what you do. The exclusions often do more work than the instructions.