This is actually a very interesting question. I’ll tell you what won’t fly: your typical rock ‘n’ roll and metal antics. Most of those are designed to say “hey look at me. I am a rock ‘n’ roll God.“ Since pride is considered a sin, that kind of drawing attention to oneself would not be tolerated in most religions.
it’s going to be real hard to give you real advice though, because it will come off like “just act like this, and no one will suspect a thing”. But I will say this: most people involved in praise and worship music do so on a spiritual level, and it tends to show during their performances, as they acknowledge, not themselves for their own glory, but their deity.
TLDR: It’s OK to look like you enjoy it on a spiritual level, but don’t visually call attention to yourself.