WWHF : Excited & Terrified - Seeking Advice

Good day Indie Hacker Community,
I'm here today seeking advice.

I have the pleasure to say that Wild West Hackin' Fest has offered me a time slot to present my tool KERnano as a 20 minute (or less) talk in October.
I'm super excited, and as implied in the title, Terrified.

I have not presented in a conference before, but I do have the opportunity to submit a video of my presentation.

Does anyone here have experience with public speaking / presenting at a Hacker Con?
If so, I would love some advice.

Thank you in advance for your time, I appreciate it.