The more you practice being in front of the camera, the more comfortable you will become. Start by recording yourself and watching it back, then gradually work your way up to speaking in front of others.
Before filming, take time to prepare what you want to say and rehearse it until you feel comfortable. This will help you feel more confident and less nervous when the camera starts rolling.
Rather than worrying about how you look or sound on camera, focus on delivering your message in a clear and concise manner. Remember that the content is more important than the presentation.
It's natural to feel nervous in front of the camera, but try to relax and be yourself. Pretend you're having a conversation with a friend and speak naturally.
Don't be afraid to ask for support from the filming crew. They are there to help you feel comfortable and confident on camera. Ask for feedback, tips, or advice to improve your performance.