The fifth Animation Mentor assignment was do three jumps with a one-legged ball. For this 2D revisit of the task I drew a one-legged torso somewhat like the "Norman" character in Eric Goldberg's recent book "Character Animation Crash Course".
The legs were the hardest part of this one. I redid many of the drawings several times to try to get them to maintain approximately the same proportions from frame to frame.
I also did a brief CG test of jumping motion to quickly experiment with timing and posing. I regret there's nothing quite as convenient as IK legs in hand drawn animation.
When I compare my hand-drawn animation to my original 3D version of the school assignment...
... I miss all the little jiggles and squetches I was able to add to the CG character.
In CG (Animation:Master in this case) if you want to adjust your squetch you just have to move one slider or shift a few bones. Try to adjust your squetch in 2D and you have to redraw the whole character, not just once but on many frames. Some of the CG squetches are so small i don't think they could be done in drawings.
That's my excuse and I'm sticking to it!