Start with a recurring problem
Choose a bounded task record when agent work is vague, a decision record when rationale disappears, or a release checklist when delivery evidence is hard to find.
Keep the useful piece
A checklist, skill, schema, or standard can stand alone. Combine components only when the relationships improve your workflow.
Expand deliberately
A standalone practice can become a compatible component and later part of a connected operating system. Every level is a valid stopping point.