I am not tall. And I have small everything. Small hands, feet, etc. However when I noticed that the tiny things about me where actually ways I could get ahead, modeling opportunities came my way.
It is easy to spit out "I'm too short," but why do that?
Modeling is not just about being a certain height if you know how to market what you do have.
Don't forget that modeling is about modeling 'something' and many times that 'something' is a retail product or lifestyle product and a product that is not so high fashion. A shoe, a handbag, a cell phone.
Agencies and brands DO use models that are NOT all tall. But you have to notice these ways to get in the door.
What you consider a flaw could be your ticket in to an agency, and towards opportunities. Use what you do have.