I start with these rules, then adjust as I want...
EMPHASIZE:
- *Summary.* First paragraph like newspaper (who, what, where, when, how, why).
- *Benefits.* Focus on the benefits for the reader.
- *Why this matters* Focus on what it adds to the reader.
NO:
- *No tech stack.* Do not say the tech implementation; covered elsewhere.
- *No counts.* Do not say page counts, part counts, chapter counts, etc.
- *No special formatting.* Do not bold, not italic, not bullet lists.
- *No "if".* Do not say "If you do X then Y"; instead use positive.
- *No run-on sentences.* Do not use many clauses nor too many words.
- *No passive voice.* Do not use passive, or non-subject, sentences.