Nice Test, even if it is just stickmen. It's very fluid and flexible.. one thing though, try to pace the movements better. For example, when the black stick is about to punch the grey one at around 3 sec, animate him holding his punch back, then exerting force to make him seem like he's that much more powerful...And just little things like that. Don't be afraid to animate the little details in between the punches and kicks, build up to it (and since you're testing it with stick people, this is the perfect opportunity :)