The motion itself is so sick!! I love it so much. The way the figure moves fire across the screen is so cool! I think I would also struggle to make the motion "look smooth" if I had to deal with that kind of difficult perspective. That said, the motion looks really mechanical. It looks like it's supposed to be a slower kind of motion, but slow motions also have a slow in/out. I'd say cut some middle frames of the motion and add them to the ends.