If you are interested in modeling, make sure to look for reputable agencies. There are some dangerous people out there who try to take advantage of aspiring models. Since you are in CA, you can look at some agencies in Los Angeles. For example, the website LAmodels has a tab labeled "Become" with instructions on how to submit your headshots. If any agency asks for a meeting, remember that you can always bring along someone you trust. Good luck and be safe.