Even if you have a good eye for color and a sense of what you want your logo to look like, you should still consult a professional designer. Why? They know whether or not a logo design will transfer easily into print or onto a sign, while you might come up with a beautiful design that can't be transferred or would cost too much to be printed. Your logo is the foundation for all your promotional materials, so this is one area where spending a little more now really pays off later.