Prepare in advance, 1-2 months before the event
Do short repetitive rehearsals
Speak out loud!
Be prepared to throw away materials (prepare more raw)
Record yourself, even if it looks/sounds silly
Stop when ideas pop up, write them down / update slides
Find the holes, the missing parts in your talk
Something doesn't sound right? DROP IT
Something feels just like extra info? DROP IT
Something is a maybe? DROP IT
Time your runs, remember key points, move around them
Sync your transitions, remember slide design
Make sure you speak as if you are on stage (slow/fast)
You learn your speech entirely
You have our speaker notes with you for help
You have to go all the way, start to finish
Are not unprepared!
Each talk will be a different experience
You can adapt to the audience on the way
Talk in front of friends / at meetups
Listen to your voice, improve as you prepare
Emphasize and "exaggerate"
First 5 minutes (if unscripted talks)
Are you preparing a demo? (have a backup)
Moving off-slides? (rehearse that part)
Record yourself and write down what you should correct
Refine your slides/talk as you rehearse