Great post, Peter!–that is the same sensation I have when I am doing well.

Bill, you might be over doing the pucker a bit. The key really (I think… correct me if I’m wrong…) is open lips and engaging the corners, it’s not really a pucker–its more important that (I think…) you have the psychology/sensation of a bit of a pucker from engaging the corners and keeping the top middle lip relaxed and free…

I think Peter’s recommendation is great.