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Keep in mind that this is a business. There is a lot of math involved. You must take into account every expense you have from your mortgage/rent, food, utilities, taxes, equipment maintenance, equipment upgrades, new equipment throughout the year, advertising costs, materials (cds, dvds, business cards, brochures, fliers, packaging materials, shipping costs for your products, etc), vehicle maintenance, insurance (home, car, health, life, equipment, studio space, etc). To start your business you must be prepared to handle both the highest paying clients and the lowest paying clients and still turn a profit.