It depends - usually I am OK but I do get anxious if all the attention is on me and I have to explain something to all of them or something like that. If I'm the center of attention. I've never been good at that. Sometimes my voice will get a little shaky. I do tremble and sometimes choke (because I seem to run out if air) when on conference calls for work but not usually in other situations. I'm usually OK around strangers / coworkers if its a group but get kind of awkward if its one on one.
You live up in your head
Scared of every little noise
Someone's always breaking in accidentally
Using nothing but their voice