Unlike most professions, architects are fairly accustomed to standing up in front of a group of people and public speaking ... but that doesn't mean they like it (or even worse)  - that they are any good at doing it. The concern going through almost everyone's head before they get up in front of a group is that they will look stupid, sound stupid, or generally come across as someone who shouldn't be talking about whatever it is they are talking about. If that's you, the good news is that you are not alone.