It is entirely possible that you can develop a level of fitness suitable for becoming a fitnessmodel on your own, but It is a long shot. If you seriously aspire to a career as a female bikini model, you would be wise to find a personal trainer that can show you exactly what it is you need to work on, and what physical assets you should develop and tone in order to look good in your fitnessmodel portfolio. You will need to be slim and trim, with excellent muscle definition. Female bikini models need to look fit, but maintain a pretty and sweet look.
Once your body is in shape, It is important to find a good professional photographer who can capture that excellence in photographs that will sell you to potential clients. A good fashion photographer will take dozens maybe hundreds of photographs that will focus upon your look and your fitness, but will also place you into sports themes and swimsuit photos. Your portfolio will be your calling card. Getting a good one is of prime importance in becoming a fitnessmodel.
Once you have the body in shape and the portfolio in hand, It is time to sell you as the product. It is time to step out into the marketplace and start calling on agents. Your photographer will undoubtedly have some suggestions about agents in your area, a good place to begin. You will be interviewed both to enable the agents to actually see you and to determine how much experience you have. Always travel with your portfolio. If an agent is interested in you, he or she may do additional test shots to see how well you work with support staff.
Once you find an agent that is interested in working with you, you'll undoubtedly be scheduled to meet with potential clients for job interviews. Make sure you look your best when you go to these interviews, and always be on time. You've learned how to become a fitnessmodel. Now, you're there to impress them. The first meeting, their first impression of you is the most important.