Not yet! The default seem Hobby but I feel that I do too many things that I take too seriously. Or maybe I need to re-contextualise THAT word. I do llike "practice" though. I practive art, I practice game dev. I practice silk scarf painting. It sounds like both knowing how to do it, like a doctor's practice, and learning it, which suits me very nicely. Kinda sorta works in my native german too, "Ich praktiziere [activity]", which has a lot less training to it though.
Do you have any good alternatives?