I'm going to have to do a speech for a school project tomorrow. Any tips?

I'm going to have to do a speech for a school project tomorrow. Any tips? I have a mild stutter that seems to worsen every time I need to speak to a large group of people. I've done presentations in the past where the results were ok in the sense that people can still understand me but I still stutter a lot and spoke to fast too. This is also the first time I'm doing a speech. Any tips?