Will deliver a speech in front of 1000 people

Will deliver a speech in front of 1000 people Hello! There is this chance for me to finally do what I have always dream of -- to speak at a stage infront of others. For the past months, I have been trying to do this but only in a small sized people. This would be my first time with a huge audience. My purpose of saying YES is inclined to my desire of public speaking. There were lots of moments growing up that I regret now not going for it because of fear. Honestly, even today, I am frightened. That maybe the worst case scenario in my head would become my reality. Yet, I am still choosing to go for it. Do you have any tips, advices, and encouragements?