I am still learning how to do it.
(N/A)
I basically get how to do it, and I'm getting better.
I can do this pretty well.
I perform at an advanced level.
Do I sing the right notes? Do I sing in tune?
Do I sing the right rhythms? Is my beat steady?
Do I sing with a great tone quality? do sing the words clearly?
Do I sing with a good body position and a good posture? Do I use my breath well?