Confidence in front of the camera is built over time and comes with experience. One way to build confidence is time spent in front of the camera. PRACTICE, PRACTICE, PRACTICE. Take some time each week if possible and practice being in front of the camera. Don't just practice taking still images, but include video as well. When is comes to posing, practice in front of a mirror. Find a friend with a camera and PRACTICE, PRACTICE, PRACTICE.