There are a lot of good tips out there for getting started being on-camera. The ones I have found most useful are:

• Practice while walking around the house
• Be natural
• Don’t give up – keep recording videos
• Smile
• The camera is my friend
• Tension and release: Consciously tensing muscles then conscientiously relaxing them
• Breath deeply
• Trust the knowledge, abilities, and preparation I have done
• Picture people behind the camera
• Stand on the balls of my feet / lean forward  (video 4 blow has an example)