Well just having long limbs doesn't mean you will be a model, for any girl wanting to be a model the business is tough, competitive, and a lot of work. No matter your height.
Although I have witness some tall models who do NOT have good skin, do not have good looking legs, and do not look so beautiful, but why is it that their limbs, their length, inches, and feet make them more accepted you might wonder?
Well don't do nuts over that question, because honestly, modeling is for girls of ALL heights, but it is what you make of it.
If you are petite focus on your strengths, great skin, great hair, great energy, and focus on commercial print modeling, not fashion modeling, don't go to Elite's open call unless you want to be told you are too short. Instead focus on submitting your photos by mail to agencies that Do accept models of all heights, lifestyle and commercial print modeling agencies. Do your mailings and focus on making your photos show your personality. The best thing to do is to ask yourself, " where in this business can I get work..." it means confronting the truth, and really thinking about what you want and making it happen through persistance, research and trying.