Before the Presentation Jewelry should be kept at a minimum since the metal may cause reflections across the network. Select simple clothing, with few if any patterns. Colors should be clear.
Blues transmit very well.
Rehearse your presentation multiple times. This will make you more comfortable when you are on-camera. If your presentation includes written information to your audience, formatting must be scaled for the equipment used. Powerpoint software is a good choice because it does this for you. Larger font is easier to read through the electronics.