Present again. And again. And again. And get used to stuttering. I think advertising your stutter is useful, but I don't think it's 100% necessary. People will figure out if you stutter quickly. If they ask you something silly like "if your mic dropped?" then you can tell them, actually no. I just stutter. (I actually prefer saying I'm dysfluent in my speech, as I feel that stuttering is one type of dysfluent speech - repetitions.)