Hmmmm
I liked it. Your effort is clear and the story is simple and easy to follow.
a bit of criticism: Work on your timing some. Vary the speed of your movements. this is a gradual skill you will develop but its best if you call attention to it now. Observe the way a person actually walks. The way they move their arms. The varying speed of their legs.
I suggest doing a few drop tests (sack, leaf, brick) or a ball bounce test to better your skills. Just youtube search these things.
For these tests I also suggest you dont bother coloring them. I know it sounds silly but not adding color will help you focus on the lesson you are attempting to teach yourself.
You nailed story though. Telling a clear story is one of the hardest aspects of animation. Watching an emerging animator is one of the greatest joys of this site. Keep up the good work.