1st off... felicitations! Speaking is fun, and so insightful - for both audience and speakers in my books. As someone who came from music, and having seen many many stages, I have a few items that I always keep in mind. Allow me to add a few, random as they may be:
I always do a tech walk through (before the open). which means a few things:
Someone mentioned being comfy - agreed. This also brings me to some dress details
I also check them during my tech walk through because: contrast & content. I check the screen to see how the lighting will affect the contrast of my content. I in fact create 2 versions of a slide. and will check to see how either look. At which point, I can decide which one to use and make global changes to colors.
Live coding?. as others mentioned: ⚠️ proceed w/ caution. my only recommendation would be to take this on like a cooking show: everything is already made. Meaning, have your commented code ready to go, pre checked for errors, and simply comment it out when you're ready to run it. I saw Ilya Grigorik do this, and it was perfect.
here are some miscellaneous bits:
Try to create multiple backups of your deck. Locally, cloud, and a USB - just in case things go south.
Maybe invest in a $10 HDMI cable, so you can do some runs in your hotel - by plugging into your hotel flat screen. I have mine with me at all times + it comes in handy for some Netflix and chill later. ;)
Hit the rest room prior to your talk. ;)
someone talked about mentioning other speakers, I try to do this all the time when their content might possibly support mine or vice versa. Great way for audience to connect dots, and also acknowledge other speakers and their work.
Anyhow, hope this all made sense. Best of luck.
PS - sorry about the length. Had a cancelled meeting and wanted to chime in. ;)
These are AMAZING tips!!!
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