Petite models are about between 5'3" to 5'5"- or even shorter, but that doesn't mean you can't model, the key is finding ways you can, not dwelling on ways you can't.
Print and commercial work is the key! It is the way into the "real" modeling business for the short girl.
To acomplish anything challenging in life (like being a really short model) you have to be realistic and be passionate, serious and ambitious and smart about it. Trying doesn't mean taking the shortcut and being so desperate that you forget the real reason you wanted to do something and the real goals you have.
Being a petite model is a challenge, it is not easy, but if you focus on your photos, focus on your submissions to agents,and if you are a new model: focus on working with aspiring brands, jewelry, handbag, or accessory brands, focus on creating photos that show that you can work/model with products and be as marketable as you can be. It is important to be able to market yourself, and know how to do this, and have the marketing tools (Headshot and compcard)you need to do so.
How can you call yourself a striving model, if you have never mailed your photos to an agency, or put together a compcard or headshot?