Plan your presentation (write a script) so you know where you are going to be drawing on the glass. If you need to erase a lot between slides, it might be too long.
Pause before starting (count to 5 silently), and look at the camera (between white tape). This gives you a clean cut point to edit out your video.
If people are going to watch several videos, do not record an intro on each one.
You can incorporate PowerPoint slides, graphics, movies or even props.
You can add text in YouTube. This can be for a superimposed intro caption or a topic name, or for reinforcement or corrections.
Solid color (not black) clothing works best when recording. No text or busy patterns on clothing is preferred.
Microphones
The boom mic is mounted at center of the lightboard itself. It can cover audio from a single person or a group standing behind and within the width of the lightboard.
PowerPoint for the Lightboard
Set the slide background to black, and the page aspect ratio to 16x9 before you start.
PowerPoint is not good with changing page layout later; it will stretch your slide content.
Leave space for you. You become a character inside your PowerPoint slide (You can also use the offset mode or picture in picture mode).
Try something other than the usual "bullet point talk". Add hand-written items interspersed with just a few PowerPoint bullets. Handwritten check marks. Or cartoon sketches but no text.
Drag your PowerPoint to the bottom screen and start slideshow..
You can run a movie in PowerPoint, and even point to things in a movie as it runs.