Kid modeling for advertisements can be a very competetive buisness, as with any area of the modeling industry. One way to get started would be to check out local or visiting modeling agencies. These agencies often compete at modeling coventions across the nation, and offer exposure to many modeling and advertising companies. Headshots are also required, and do not come at a cheap price. The average cost for proffesionally done headshots range from 500 to 800 dollars. You may be able to get them for a lower price, but you run the risk of lower quality pictures. Another way to get into the buisness would be to look for local modeling jobs for department stores. The more experience you gain, the better the chance you have of landing a good modeling job.