Being persuasive

Hey everyone, so I have a debate coming up in about two months and feel pretty anxious about it but I have been trying to manage the actual stress part of it. However I was wondering if anyone had any tips on how to be persuasive, how to get people to listen to your speeches, and overall being engaged in what you’re saying. Also is there anything that leads to people subtly agreeing with you do to mannerisms? I would greatly appreciate it if you has any advice about what has worked for you or what has even worked on you. Thanks in advance!