The eyes will be an important part of the scene so I wanted to give them the time a day they deserve. After I got my acting beats down, while acting it out myself, I started to think about the flow of the eyes. Where should there be blinks? Where should they be open and closed? All this planning is saving me the pain of erasing faces, eyes and nicely drawn but wrong mouthshapes from my keys. It is pretty simple and doesn't take a lot of time or effort to do. I am very pleased with the results I am getting with this aproach and can only recommend you try it.