1. Practice like you fight - wear the clothing you will wear, use the lighting you will use, the camera, the microphone, etc, etc.
2. It's your BEST chance of getting hired! Read that again - it's your best chance of getting hired. Don't take it for granted.
3. Have someone ASK you questions. Not just the questions you've prepped for. Don't just practice the latest gauge. What if you're the first guy with the new question bank? Rut ruh. By practicing different, and perhaps unexpected questions, you'll be better prepared.
4. Be yourself. Trying to
be someone else often comes across as fake. No one is perfect so don't try or pretend to be perfect.
6. When you're done answering a question you can hit the pause/end/next button. Or you can look at the camera and feel silly. And you don't have to use all the time. If you've got a good answer hit pause/end/next and move on.