I’m finding that it’s very important to just get up there and talk a little bit, make some dumb jokes, let people get used to you existing. A lot of times I talk about the status of the talk (“this is a new talk and I’ll be glad to hear what you think”).
I’m noticing that this style of presenting is very adaptable; when you’re in a small room you can turn it into a conversation and bring in the audience; when you’re speaking to hundreds of people, and engagement is not possible, you can just keep plowing ahead but it’s still like you’re just having a fun chat instead of holding forth. You can even do a kind of professorial “Oh! Right!” as if the deck was surprising you, and both you and the audience were just seeing this information for the first time together and you were merely riffing.
I highly recommend that you try to find some way to go see Paul give a talk.