You know you're destined to be a fashion designer if you (1) spent most of your childhood making clothes for your Barbie dolls instead of playing with your friends, (2) read fashion magazines instead of your school books, (3) ran a boutique out of your basement at age 10.
The problem with writing an article on "How to become a fashion model" is that you can't really become a model.
Either you were born that way or you weren't. And if you were, somebody has probably already discovered you, in which case you don't need to read this.