Those imports are from old files of Ero Witches, they aren't currently in the game. You'll also notice that the file naming is different there.
You can always look at the full project files on git, there's a link in the Discord. You should also post your mods there, I often add those to the game.
Ah, I see - that makes sense. I haven't played Witches, or perhaps I'd have recognized them as old equipment.
I'm highly unlikely to join the Discord, for personal reasons, but I'd be happy to post the file here for your perusal, when it's complete.
I think the sprite ears are a bit too long and pointy at present, so I'm going back to touch them up a bit, but I think I'm starting to get the hang of this now.
Hair & skin matching works, 'Puppet' attachments on separate layers, and merges nicely with almost all hairstyles.
There is
one graphical issue, with the 'uptwintail' style, which I must leave to our good Dev to correct (if so inclined).
The 'back' ponytail is on the main hair layer, not 'backhair', so it overlays the 'back' ear. Simple fix, really, but possibly time-consuming.
EDIT: tweaked sprite ears to be less pointy, and removed hair coloring from inner ear fluff.
Barring further suggestions from dev or audience, I'll call this item 'done' and commence work on the tail.