Never ever overtake on the left. Signal each manouevre. Announce you're passing. Pump your tires. Shoal nobody. Look both ways at cross streets even when you have right of way. Stop to help people with punctures.
Inspire your fellow riders to exalted displays of refined behaviour with a messianic display of flawlessness. Never rest.
BONUS TIP: If you collect a bunch of 12 guys you love to ride with, and they take your word as gospel, and then you all go out for one last supper, and one of them gives you a kiss, it would be safe to be worried about your immediate future.