Learning the rules that relate to your field of artistic endeavor is important. The rules are how we learn what works and why. Learning the rules allows us to grow as an artist.
Once you understand why something works you are able to bend or break that rule successfully. This is how you develop your look or personal artistic style. Learning to manipulate the rules, so that everything still works, is its own art form. It doesn't happen overnight and can require years of work before you can make it work.
It doesn't matter what form your artistic outlet takes be it painting, photography or interior design, you must do the work first. Learn how to create the basics of your art form. Everyone must first understand the rules. Only then can you successfully make your personal artistic style and statement shine.
Are you an artist? How have you learned to break the rules successfully?