I think if you are going to be a singer, you should sing. If you are going to be a dancer, you should dance. If you are going to do a combination of the two, you should make it very clear when you are singing and very clear when you are dancing.
All stories interest me, and some haunt me until I end up writing them. Certain themes keep coming up: justice, loyalty, violence, death, political and social issues, freedom.
When a performance isn't working, it's usually because the actor is trying to do something and they're not able to express their idea very well. It's a muddled expression.