well the sugestion of not being allowed to speak until your Master says so is a real good one, it has kept my little mouth shut on many an occassion. LOL.
it also helps if you constantly keep in mind that you are a refliction of your owner, you have a resposibility to "represent" so to speak, who knows the people you are talking too may one day be told about your relationship with your master, then what would they think about it? what kind of "uppity" sub do we have here, shouldnt she be subordinate to her owner etc etc?