Describe your worst presentation. What would you have done differently in order for it to have turned out better?

Well the time i had a terrible presentayion was when i was inn 7th grade and i was not prepared and I did things the night before it was due which is a really bad idea. and guess when it was due? 4 weeks before omg and i later learned from that and i took my time and I finished it later and I learned my lesson