I'm glad you started this rhread, Marion. I used to worry that my performances were not as good as I wanted them to be. Then, it occurred to me that the people who were most qualified to judge my performance was the audience, and they seemed to like what I did and they hired me for return performances and who the hell was I to demur. You will know if you are not doing an acceptable job. The audience will tell you, and their word is authorative and decisive. I read somewhere that George Bernard Shaw was taking one of those "Author, Author!" bows when he heard one dissident voice booing amidst the cheers. He turned to the heckler and said, "I agree with you, sir, but who are we two against all of them?" If you continue to please your audience, you can do no more.