1) Don't introduce yourself as an alcoholic/having the desire to stop drinking in closed meetings. Yes, yes, I know, nowhere in the BB does it say that you have to introduce yourself as an alcoholic. However, by attending closed meetings, you're making that statement with your very presence. If you can't verbally admit it, you probably shouldn't be sharing.
2) Share at every meeting you attend. For HP's sake, do NOT let a meeting go by without your input! Gosh knows some folks only get to hear you once a day.
3) Share even through you're more than 15 minutes late. I understand that doctors and like professionals attend meetings, and that those schedules don't bend to meeting times. However, if one is late because the line at Golden Corral was longer than anticipated, this may be your HP's way of saying you're meant to listen for what little time you have left in the meeting.
4) Go as long as you like. Anything longer than five minutes is ego. Most folks attend discussion meetings in order to hear the thoughts of more than one person. If you would like to take up the whole meeting, please get with whoever coordinates your group's speaker meetings and volunteer to speak at the appropriate venue.
5) Say the same thing, every single time. I sit in meetings with people whose sharing I can literally mouth the words to, like a song. That just ain't right.
6) Share at people. This is the practice of lecturing someone about something in a meeting rather than discussing it one-on-one with your victim. Meetings are not the venue for our personal vendettas - if you have something to say to someone, say it to them offline. If you can't do that, don't use your group's patience as a social crutch.