How to hack BRAWL? USING USB LOADER GX

[Goko567]

   Hello guys, I'm new to the site and I'm fairly new to hacking the WII.

I recently downloaded Project M, but I wasn't used to playing melee so I uninstalled it..

The reason why I installed it in the first place was because it's the only way I could find out how to hack BRAWL via usb loader gx.

I'd love it if someone would tell me how to add custom characters/skins and sounds in usb loader gx, Thanks!