At first I was very nervous about doing presentations and once I absolutely stuttered through all of the presentation in front of the whole department and all of the students and guess what it has all passed , jt was 2 years ago, and now ? I don't really care , I will talk comfortably and if I stutter I will wait a bit and talk , it's totally normal because the instructors will understand that you have stuttering and that's totally ok tbh it just makes you feel more relaxed and comfortable. So I suggest you do the presentation a couple of times before the actual one and just say what do you want to say for like 5-6 times , and then trust your guts and do it , also don't panic if you stutter because it's not something you can control, I spent 5 minutes just to explain 2 slides and guess what the instructor didn't say anything, but it's still very normal to feel nervous and scared that's real feelings don't try to fight it just go with it and do your presentation.