The Mudkip was made using a reference, the pokeball shape was made using:

https://www.minecraftskins.com/skin/10422868/pokemon-requests/

as a reference. I made the design myself.

Inspiration to do a Pokemon pixel art was from 09GotrGir1
https://www.minecraftskins.com/profile/4576219/09gotrgir1

Thanks for reading!

Bye!