Leeta : Face Moving parallax and face moving Shadows

Hello, I just looked at daves new puppet Leeta the hair moving on her is world class (well done david, excellent work again). puppet

I did the Shadow effect on the face of my test puppet, as well as the parallax of the face from side to side like in Leeta, just cant get the same effect. anyone any tips? Well done to the team at CC -- great work