On the last blog entry on the Single Palm Change, I accidentally reversed the pictures. So the top one is proper form, while the bottom is the weaker of the two.
Some further thoughts on the Single Palm Change, and Ba Gua Zhang as a whole, are that it took me months until I finally started understanding how one can have constant power throughout the movements. There is no stop and go, or stoccatto-like movements, but one continuously powerful form. I think that is a big part of this realization in the Single Palm Change. All the wisdom of Ba Gua Zhang is found in the Single Palm Change. This is certainly one of my favorite arts to practice and read about.