what files can i delete? can i mod project m?

[LSSJTHOR]

i downloaded the new project m through homebrew. i have modded charecter texutures i want to use. can i add to the new project m(replace ther fitsonic01.pcs with another one to make his texture shadow?)
also what files do i not want to delet so i keep mewtwo?
i want to be able to
1.keep metwo2.get pokemon trainer back3. get rid of all there levels4.get rid of seperate pokemon5.be able to add my own textures. 6 keep roy
ive known how to add my own textures when i run ssbb with the geck os(#but not with the physics of project m) also i never knew how to add charecters(like add an icon space, sounds, like add shadow to the roster all together)
so i basically know how to modify these filed pf/fighter/,and pf/level/melee, idk where sounds,icons,and w.e. are.

 

[Chzrm3]

Textures and even model swaps are really simple - just pop them into their respective character folders. You shouldn't have a problem keeping mewtwo or roy, either - just don't delete them!

There's really no way to get Pokemon Trainer back. If people really wanted, they could probably make a PSA that brings back the original Pokemon Trainer, but nobody has done that yet, so right now there's no simple additional file to download to get him back. And if you erase the existing Pokemon stuff, the game will break.