Hi, I struggled with this for a while also. The trick,as far as blinking is concerned, is first to select the keyframes where you want the action to start, finish and return. Then open the graph editor in the animation palette and select the body part. In the top right there are 4 Buttons with graph shapes. Change the type of graph between the selected keyframes by making the graph either constant, the grey button, or the the brown button. (Can't recall the proper name at the moment). Hope that helps.