I just finished my first pass of my first mod. I'm really excited. Though I noticed a problem. When I load multiple of my costumes at once, the textures scramble. For example, Futaba (Inkling)'s clothes are plastered on Makoto (Samus)'s arm cannon or Kasumi (Lucina)'s clothes being what I can only the texture from Joker's Strange Journey outfit that he was wearing when I loaded in the map.
My working theory is that a bunch of the custom textures have the same name. Several of them had names like "bitmap33" or "bitmap49." Thing is, this isn't happening to every character who had those texture names.