Need soccer character animation redone

Hello everyone,

I have this 1 minute explainer video for a soccer gathering app: https://drive.google.com/open?id=1N2iJ0t5kP5T_hI2pm9VX8P0-x28ewPMz

The character animation is not the best so I need someone to redo the following shots:
- 0:08 to 0:12
- 0:24 to 0:26 (2 shots)
- 0:28 to 0:31 (2 shots)

I want the animations to look more detailed/natural/filled, here are some examples of what I'm looking for:
https://dribbble.com/shots/4693550-Ready-for-the-World-Cup-2018
https://dribbble.com/shots/4465404-Baller
https://dribbble.com/shots/3225051-Sam-Juggling-a-soccer-ball

I'll provide as many input and references as needed as well as the illustrations in whatever file format you need.
Regarding the software, After Effects would be the best choice but any other softwares are fine, you just have to deliver the final piece exported since I won't be able to edit it later.

This project is confidential and you're not allowed to use the final piece in your portfolio, but feel free to use the animations you created as so.

Artists applying need to be able to start working asap and I'd like the final piece to be done in 48h (or less, if possible) and I'd also like you to keep me updated with the proccess so I can make sure the animation's heading the desired direction.

Thank you!