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A tip, if you are using some kind of presentation equipment like a beamer, test it beforehand.
I remember a Powerpoint presentation long ago where the beamer would not display the embedded movies in my Powerpoint presentation !
Mate, you wrote the book on it. Literally. You know your subject matter so just talk about what you know.
Just pretend you're showing a friend something cool and talk through it. Don't worry if you forget to cover something, or you get it out of order - no one, literally no one, will know. Relax, take it slow, make sure you can be heard, and stare at those in the back row if the eye contact makes you nervous.
I've done this several times. I did this once to a large room full of people from across the business, including external suppliers. I was nervous, but once I got started the nerves soon dissipated.
- Have bullet points and use these to give your talk direction and flow (but don't just read from them, they are only bullet points)
- Use pauses to allow you to give eye contact and allow your points to sink into the audience
- Use Powerpoint, code samples etc to make your points clearer and provide clarification
The only person who knows you are nervous is you, no one else in the room knows that. Use that knowedge to your advantage.
"There are two ways of constructing a software design: One way is to make it so simple that there are obviously no deficiencies, and the other way is to make it so complicated that there are no obvious deficiencies. The first method is far more difficult." - C.A.R. Hoare
Don't talk to the crowd, buddy, talk to specific people in the crowd.
Pan the audience while you're speaking and let your focus settle on individuals while you speak. It's a lot like talking in a group of friends at the bar. Just don't settle on one person for too long, let your "conversation" be with as many people in the room as you can!
"Never attribute to malice that which can be explained by stupidity."
- Hanlon's Razor
I was expecting something a little less dumb.
These guys are so dumb they don't know how shoes work.
They're so dumb they wouldn't be able to function at all in society, yet here they are.
It's just forced and not funny.
Other likewise shows that come to mind are Mr. Bean and Bottom.
That's just not my cuppa British humour.
The reason this funeral scene is funny is because it could happen to a normal, yet slightly socially awkward person.