I see why it doesn't flow.
I just finished viewing the piece without the dialogue. The way I made this was I made several key drawings. These were the extremes, the poses I wanted him ("Jeff") to hit. And then I inbetweened them, mathematically. I spaced the inbetweens evenly between the two extremes. I did this so much that this is why it doesn't flow. He starts at one extreme then moves on to the next one, and then the next one, and then the next one, and then stops. It is really noticeable especially when he moves his arm from an outward motion to an inward motion. He hits that key pose and moves back in. There are no arcs in his movements. You can connect the key frames with a straight line. (I think I could do well animating robots!)
So THAT should be my next project: Ninjas vs. Pirates vs. ROBOTS!!!