I've begun on the Actions and Smart bones with a task of setting up a simple head turn exercise, I know it has been covered on the forum ( looking at a YouTube Vid ) still can't get this mask to work, tried em all, so obviously doing/done something wrong, no bone other than the 
body turn bone, just the animated mask turn, ain't working just now and from the jpegs supplied, I know I've still got to solve the nose, on final side view.
 
 
  