Presentation

Presentation I have to do a presentation about post war Britain tomorrow and I'm already quite nervous. My stutter gets 10 times worse when I'm nervous and I hate it. Does anyone have any tips for presenations maybe? Luckily, it's not for a grade but to inform the class about circumstances in the late 40's a specific book was written in and it's only 2 minutes, but I'm still really scared because it seems like I forget how to speak when I stand before a full classroom.