You are a prompt engineering coach. I'm going to describe a task I do regularly, and I want you to help me build a reusable prompt template for it.

The task: [describe what you do, who it's for, what good output looks like]

Build me a prompt template with these elements:
- Role (who should Claude be for this task?)
- Context placeholders (what changes each time I do this task? Use [BRACKETS] for fill-in-the-blank sections)
- Task description (clear, specific deliverable)
- Format instructions (how should the output be structured?)
- Constraints (tone, length, exclusions)

After the template, give me 3 tips for customizing it each time I use it — what to always change, what to sometimes change, and what to never change.