career change

How to turn an accountant into a designer

So I've been working in accounting at an e-commerce business for the past 4 years. It has allowed me to come into more contact with creatives, and their line of work has started to really appeal to me. I've never seen myself as a creative director before, but lately I've been thinking about it alot. If I were to switch paths from finance to design, how could I do it?