I need help with a mod I'm working on

[Dodobee]

So I thought of an idea for a mod that tries to incorporate the Mario Wonder badges into the Mario Bros mod but I ran into a problem, I need help for a way that the player can change their badge and I also need help for the animations. The Mario Bros mod uses a lot of the base game animations and one of them is the FLTanimations which are used for the slow-fall ability in the base game but the mod uses it as a fall animation for Mario and Luigi, so when I edited the sprites, it ended up playing the parachute cap animation whenever Mario jumps so is there possibly a way that I could add extra animations that replace the falling animation?
(btw I won't be releasing this as I don't have permission from the Mario Bros mod creator)