Earning money from creative expression has always been a crreative issue because many think that money impinges on the integrity of the creative work. Making money forces you to think within limitations. As creativity is aided by restriction, this actually encourages it. Whether writing a work of fiction, painting a picture or designing a corporate logo, you must create for yourself first, and your makf second. If you do it for income, you create in a way that engages you within the boundaries of what an audience will pay. In this way, the brief defines the edges of your creative expression.