Most people start new businesses because they love what they do. This is especially true for fashion and interior designers—many of whom have a real and undeniable passion. Though design is fun and creative, it can also be a tough industry in which to succeed financially. Personal fulfilment is important, but it's also essential to build a profitable business that allows you to survive. Whether you're just starting out or already have your own design business, these tips will help you shape a more stable and profitable business model