Nice use of shape tweens
Your shape tweens look a lot better than some of pepole's frame by frame.
Your animation is smooth but you might want to try to experment with all asspects of flash. tweens, frame by frame, ect.
You done a nice third attempt but it's at average level try to focus more time on a short that's thought out and planned.
I know this review may seem harsh but i'am trying to help you out with some advice. Try again and make a flash with more movement.
Way too go on mastering shape tweens on your third submission.