7 tips are

Talk about stuff you know are care about
Tell a story
Don't search for topics, select them
Less decoration, more focus
Manage their questions
Animate code demos
Harness your anxiety

Tell a story

Story is the oldest tool for dealing with lack of memory.

A story has flow to assist memorisation
Hierarchy - to assist comprehension and recollection. Break things down.

Historical narrative of something is a ready made story Process storyline - what were the steps we took to build something Anecdotal examples. This is what happened when I went to build X

Since you were a child you have been training yourself to understand stories.
Don't search for topics, select them

Don't ask "what should I say?" -- this is, what are the important things I can recall with mental effort, won't give us the best results.

Ask - what could I say -- what would I recognise if I saw it in front of me.

Dump your entire knowledge of the subject in any order. To analyse, don't prioritise. Just write. -- pick out the 5 main points, find a story to connect those points -- if something doesn't connect, replace it -- put each bit under those points -- drop anything that doesn't fit under a point

A screencast tool to display your keys, inspired by Screenflick.

This is an almost-complete rewrite of screenkey 0.2, featuring:

Several keyboard translation methods
Key composition/input method support
Configurable font/size/position
Highlighting of recent keystrokes
Improved backspace processing
Normal/Emacs/Mac caps modes
Multi-monitor support
Dynamic recording control
Switch for visible shift and modifier sequences only
Repeats compression
Countless bug fixes

A screencast tool to display your keys, inspired by Screenflick.

This is an almost-complete rewrite of screenkey 0.2, featuring:

Several keyboard translation methods
Key composition/input method support
Configurable font/size/position
Highlighting of recent keystrokes
Improved backspace processing
Normal/Emacs/Mac caps modes
Multi-monitor support
Dynamic recording control by pressing both control keys
Switch for visible shift and modifier sequences only
Repeats compression
Countless bug fixes