For the people who have not yet seen this video and want to improve your technique you will appreciate the advise given. The best demo I have seen in a while.
http://www.youtube.com/watch?v=iTwAIL8M5EA
http://www.youtube.com/watch?v=iTwAIL8M5EA
I've seen that one before and wonder what her face looks like. I don't think she went to Randy's Pool School, too much elbow drop.