Say it plainly.
A vague request, rewritten so a new colleague could follow it. Paste the ask. The assistant returns the brief, and asks if a piece is missing.
Fill the brackets. Paste it into any assistant.
Rewrite the request below so a new colleague could follow it with no extra briefing. Request: [Paste the vague ask.] Return only the rewritten brief, in this order: 1. The output, named in one sentence, including who it is for. 2. The steps, in the order they must be done. 3. The limits: length, sources, and what to leave out. 4. One line on what done looks like. If the request is missing any of those, ask for it. Do not invent the missing piece.