I hate to admit it, but I really continue to struggle with the timing of related movements.  However, with each class I think I get a little better.  I did try to incorporate most the points covered in this class even though she isn't bobbing up and down, I tried to move her head to follow the large fish while there is plenty of other activity in the tank.  You can see my animation here:  https://vimeo.com/914319292