you could start off with a hook.....like finding some examples on how art is used to express yourself like how on buildings they do murals(watch interviews on why people do them like some say because it helps calm them down or just frees them from all they're problems,helps them forget .. something like that) or how you can compare it to a subject like how art is just as important as math because etc.. idk if this helped but hoped it gave you a brain storm...
