One of the earliest things you can do to boost your camera confidence is to choose the best photographer for you, both in terms of the way they work and their personality. Some photographers will spend a lot of time getting a pose just so, taking great care to create a scene that will look like a highly posed fashion inspired image. A different method, and one I use more as a photographer, is more natural and organic. This latter method is better if you often feel anxious in front of the camera as I am able to help you feel relaxed and get genuine smiles, all while looking fabulous.
A photographer’s personality is also important. On your wedding day, you will interact more with your photographer than any other supplier, and it is crucial that you feel relaxed around them, and confident in their ability to do their job well.