Find your niche. Try multiple areas of photography before settling on one as your favorite. For example, you may focus on portrait, wedding, sport, or landscape photography. Find your area of expertise and use it to your advantage in your business.
Give clients what they want. You may like to take creative portraits of people, but your clients might just want to look pretty.
Remember that, especially when you are starting out, you need to make money. The best way to do that is to have your clients buy prints (or digital images with rights to print). They are more likely to buy prints if they like what they see!