I made some practice:
CNC PLEASE.....

Falling animation: Stick's movements seemed a bit too fast. Try duplicating them a bit more.

Running: Seemed as well a bit too fast with the legs. Hands should make bigger space between body and front arm should lift a bit more.

Football: Ball needs a bit more easing. In my opinion, arms looked kinda weird. Perhaps you should have made them move slightly less.

Walking: Dont really see anything wrong.

24Fps: More inbetweens needed. Everything is so fast, no force, no easing. When preparing for jump, he should bend more, push from the wall to make a backflip. Looks like he's just a puppet being controlled by someone.

Thanks you so much for the CnC:)

You animate a lot like a older member, Re(z)gen.
Nice animations! Some things I noticed (which are mainly my opinions)
Falling: The lines are a bit big. Using smaller, thinner lines-transparent-will add a better effect. The stick also seems to move back and forth a bit fast.
Running: pls no 2 frame run. For your animating style try using 5 frames. I can't cnc this well, as I'm still working on it, too.
Football: The arms and legs moved without easing. Try using more frames.
Walking: Use more frames, and try to use the |-|--|---|--|-| easing for the arms and a |---|----|---| for the legs.
24FPS: Saintorin said what he needed to.

I don't know if it was just my device or what but the running seemed pretty choppy. I still suck at running/walking but I would suggest moving the arms more and more fluidly. :3

@Zexo: Sometimes you can do that...
@Ashero: I use 5 frames for the running maybe I will use 7 frames for it..anyways, thanks.
@Vanilla: Thanks!!