While this skill can be picked up by attending courses or reading books, it takes years to develop yourself into a competent calligrapher. It's a large competitive market. You'll find printing and design companies offering this service with the use of computer software. Your competitive edge though, would be your creativity in combining art, shapes and calligraphy. Computer softwares may be great but is still a long way from mimicking the "human touch".

But if you're business minded enough, you'll know that the ability to combine computer skills and your natural calligraphic skills will bring in the money.