Looking for comprehensive info on custom race heads (creating morphs etc)

[Tesvixen]

I'm working on a huge mod which includes a number of custom head meshes for NPCs: several of them were rigged to have facemorphs/etc by a friend, but this person seems to have fallen off the face of the earth. :(

 

So, I'm looking for info/knowledge etc on how to add morphs to head meshes myself. It definitely doesn't seem to be common knowledge, and I've reached out to several people who have done custom races/heads, but so far none have replied.

 

These are human meshes, similar in shape/size to the ones in the game already, if that helps.

 

Thanks for any help. :)