So I'm brand new at model editing and watched the guides posted above, but when I try to put in the new skins I get glitches as seen in these pictures. This is my first ever model editing so help is appreciated. I'm specifically trying to turn blood elf males into human males, and the Greatsword of the ebon blade into frostmourne.
They aren't exactly equivalent in CASC files so I'm not sure how to smoothly transition them. If someone could help walk me through how to fix these errors (this is my first time after all) or just send me the fixed version it'd be much appreciated.