Hat shaping class

Has anyone here taken a class in person or online that they can recommend? I’ve been playing with my own hats for a long time but I feel I can always learn more techniques and maybe work in it one day. Also, no matter what I do, I always feel like my own hats are not perfect, so I am always tweaking my hats before I wear them. That’s all except my two daily hats, I don’t care how they look, they get beat up with my work as a roofer and training my horses.