So, you have some skill
Well, the animation of this short was very refreshing. The first bland "get outta bed" tween had me doubting at first, but the rest of your work showcases some good artistic talents, talents I would like to see used better in the future.
Oh, that sounded mean. What I meant to say is that this submission, though good for a first, still could use a lot of work before it becomes very popular. I would suggest having more of a script to start out with. Sit down and think of a good 3 minutes of what the character is going to be doing. It might take well over 3 minutes to figure out every nuance of the characters actions, but it will be well worth it. Then I might suggest getting a voice actor for milk, because that will add spice to the grey you seem to like using. Lastly, I might suggest more resolution in the end, but that will come with sitting down and writing the script.
All in all, the animation there was was very nice. Just push yourself a little harder to put out an amazing product as you work on the next flash in the milk series.