May I say that I think the difference is one of worry. Worry is not the same as caring. Caring is wanting to perform for your audience to the best of your ability. Worry is being frightened that you won't. Try to worry less and care more.

I'm sure you care about song leading but don't worry about it. That makes you a good song leader. Apply this to performing and all the qualities of song leading will come out in your performance.

The difference is thinner than cigarette paper. If you are a good song leader then I know you can be a good performer. (a little simplistic maybe but essentially true.)

Dave Wynn (A.K.A. Spot the Dog)