Love your looks, demeanor and voice
Psychologists and teachers of the performing arts note that the main reason that people are embarrassed in front of the cameras, lies in the insecurity and dissatisfaction with their appearance. Therefore, you should start with working on their own self-assessment. Realize that you look great. If there is anything you are unhappy, work on it. For example, the accuracy and neatness: indeed, while working in front of a camera these things are too evident. Take care that you have always had a perfect manicure, perfect hair and clean and neat clothing.
Home practice in the mirror to smile. Try different your smiles and emotions. Try to change posture, take it easy, excited, happy. You will find an interesting body position and facial expressions, memorize them. Your body during filming is a tool which you need to master. A sincere and open smile – it is something without which an actor or any public person just can't happen.
Believe in yourself and make friends with your body help also dancing. The dancers usually feel a lot more relaxed, they are confident in their figure and movements.
To stand not just easy, but to be able to produce the desired effect, it takes practice. You need to have someone from time to time filmed you on camera, so you can view the result and note that you do not, something ought to work. Practice, combined with the habit of able to get rid of complexes and to make a professional any person.
The first time it is possible to ask friends and relatives to take pictures of you, it could be anything: an impromptu interview or a rehearsal of your "show". But then you need the services of a professional operator. The fact that a good operator and a good photographer is able to see you that, most likely, will not appear on the shooting made by an Amateur.
Don't forget about acting classes. On them you will learn the basics of how to stay in front of the camera. You should not rely only on independent work or only on the training, you should combine both.
If you want to learn how to stay in front of camera not to constantly play the role of actor, and, for example, from time to time to carry out webinars, you will be much easier. Pre-rehearse their lectures before they are conducted, not to read the sheet. Watch your gestures avoid unnecessary gestures, do not fumble items in his hands. These little things help to cope with anxiety, but it is better to try to do it outside of the frame.