So I'm half looking for a pre-existing mod, half looking for some help to make one.

I'm hoping to get the BV Facial Jewelry to work for teens as well adults. I've been unable to find a mod so far, so I was hoping to find some help to make one, even though I have very little experience with modding.

Could anyone give me a hand with finding one, or point me in the right direction to make one?

Pretty darn sure you will need to make a new mesh, as teens are shorter than adults and the adult mesh will have the jewelry being in the wrong places.

Just a theory of mine:
You can try to export the maxis meshes and the textures as well and put them into one of the teen facial piercings from this site. To make the result show up in the right category use the tool wardrobe wrangler.