Has potential.
The voicing was really well done i thought, you dont need to improve on that, other than trying to make your characters sound more unique.
You need to try something other than stick men, the best thing to do is watch a load of cartoons on NG and eventually you'll get the idea, all you have to do is try to use as many layers as you can when drawing someone, have the outline of them on the top layer, the color on the bottom, and shading in the middle layer. Do this and your characters will be really nice looking.
Stick in a few alternative angles here and there, some comic camera shifts and your flash will be really good. I see potential in this.