Here's a relatively simple guide on exporting and editing your own texture mods for Smash Ultimate. If you want a more detailed explanation on the other textures, for making custom UI, or if you just want to learn more about DDS exporting for higher quality, follow this guide on gamebanana for more explanation: https://gamebanana.com/tuts/13429
Big thanks to nebb_y on twitter for the thumbnail
DOWNLOADS:
CrossARC download: https://github.com/Ploaj/ArcCross/rel...
Switch Toolbox download (latest experimental release):
https://github.com/KillzXGaming/Switc...
CrossModGUI download (the CrossMod zip): https://github.com/Ploaj/SSBHLib/rele...
Intel DDS photoshop plugin:
https://gametechdev.github.io/Intel-T...