Dear Vicky, yes. A course in Creative Fashion Styling can help you learn the tricks of the trade. And Fashion designing or styling is more than designing clothes for celebrities. When you join any NIFT for a Fashion Designing course, you straight away don't design clothes for celebrities and models. That is not fashion designing, You learn the intrinsics of designing in various fields like textile, handloom, knitwear, etc. You learn these basics and put them to creative use and design clothes. And initially for you to start off, you will have to work as an intern under a designer who has established himself/herself. You learn the art and then slowly start on your own by increasing your network. For a Celebrity  to wear your clothes, they should be out of the world or you should have a reputation.