A girl told me about how an agency wanted her to take classes to learn how to walk, this was my reply:
It can be tough to figure it all out by yourself. And sometimes "those who act like they are helping you" are not "really" helping you. Especially if it involves paying an amateur agency to learn how to walk when you don’t even need that. Never pay an agency, and you do not need a modeling school to teach you how to walk. That is just a total waste. It does involve being honest with yourself and focusing on what you "can" do.
However, I wish these “amateur agencies that charge models and rip them off with bad information” would just be more honest with the people they meet. Instead of scamming them. Telling a girl she can walk a runway who is 5’3” is nuts! Then the girl gets confused and doesn’t know what she “can” do. It is so wrong! But it also comes down to the girl being realistic. If you are short but in your mind modeling to you is just “the runway” then you will miss out on a lot of opportunities.