What qualifies you to be a fashion designer?

Fashion designers should have an interest in fashion. They have to be creative. They are either born with, or aquire, an "eye" for spotting trends before they happen. They should know how to construct garments. Many designers also have had higher education; they have a degree in fashion design, and have studied fashion history. But it is possible to start a business without it. Just be commited to what you do, and be passionate about fashion, and you're already at a good start!