Lower the sound of the background music!
The drawings was ok, not great, but I bet you've spent a lot of time on it, so I'll be nice. Firstly, the looping background in the beginning was no good, as you could see it beeing "reset" to its first position. Secondly, you should try to get the limbs look like they're a part of the body. In the movie, when a character is moving an arm for example, it looks like it's a loose part that it's attached to him, rather than his arm. An idea could be to draw several "graphics" of the same arm (or feet) in different positions, so that they looks like they are a part of the body.
The biggest issue I find is the sounds and the music. The background music is way too loud, which makes it impossible to hear what the characters say. I don't know what recording program you use, but you should definitely use your sound editor to lower the volume of the music, as it was annoyingly loud. If you had fixed the music, you would likely get a much higher score.
I hope you find my review helpful and keep working as you will improve! Good luck with future movies! :)