Hey Bill I'm in a choir right now and i think that i'm pretty good at singing but do you have any advice that will make my singing exceptional?
usually one of the first things i recommend is to join a choir, but you've already done that. so instead i will try to recommend something that may strengthen your individual singing character/personality, which is to sing by yourself and try improvising the lyrics/melody as you sing, while accompanying yourself on a chordal instrument