Todays project uses a function of Flash called "Shape Tweening". To begin you draw a picture on a keyframe (1 for example). Next you add a keyframe further out in the movie -- 20, 30, or 40 frames out and draw another picture. Right-click anywhere between those two keyframes and select "Create Shape Tween". When you play your movie, you will see the shape morph from one image into the other.
You can view the video tutorial from a couple days before which includes help on Shape Tweening.
