If you can imagine it, you should try. Every day girls email me about becoming a model, the steps they should take and what they should do, well there is no perfect straight line from the idea of being a model to the day you get infront of the camera for an ad campaign for a product.
Trying is the biggest part however and knowing your self, knowing what you can offer. Asking your self, what do I have that a brand, agency, magazine editor would want? Producing quality, professional photos and striving to be the best you can be.
THAT, is a big part of getting ahead, making opportunities, but really what you put in is what you get. I believe showing up, being prepared is 90%.