The better your rulebook, the less people will need it. (And vice-versa)
— Peter C. Hayward
If you have trouble writing a rule, it may be best to remove it from your game.
— Jesse Catron
There’s one tip for rules writing I want to impart on every designer, young and old:

🔥 Stop interrupting yourself. 🔥

Parenthesis? Make it the next sentence.

Clauses and commas? Break them into separate sentences.

Forward page-ref? Move that content earlier.
— Daniel Solis
If you attend a group regularly, you might get more of your stuff tested on some days, but it should balance out in the end. People will be much more supportive and friendly to you if they feel you are doing your fair share!
— Emma Larkins
Proper etiquette for designer meetups is likely spending 2-4x the time playing/critiquing for others as you do running your own games.
— John Brieger