I feel like these would both look a lot better if you made the red and blue less saturated, it really clashes with the green and gray. Other than that though I think you did a really good job!  

I really like this one. I'll probably be voting for you in the challenge!

I think the animation would look better if his knees bent as he bounced instead of growing and shrinking. I think the rest of it is pretty solid though!

Thanks! But, maybe I did make the time between frames a little long huh?