What you have is solid. It is airy and not stuffy, plus, it left me feeling like I definitely want to know more about you, about your other interests in art and why. Plus, there is a splash of humor here too and cover letters often are not. In your case, for the position, I think it maybe a welcome addition.
If I were the employer, coupled with your resume (which I am sure is excellent on its own), I’d call you in to be interviewed.