u/Bookee2Shoes

Hello experts. I'm making t-shirts for one of my yoga teachers birthday and its a Karate Kid themed shirt since he constantly talks in class about his teacher who founded the yoga practice. It's kind of a joke.

I've got the design, but I couldn't get AI to give me what I want with a transparent background, and my attempts to have AI remove it have just devolved. Can anyone make this background transparent easily?