Practically speaking, head aligned vfx dont remove existing heads (Like the CEP JenX ponygirl head on a neck part, it would overlap on top of the existing head) and they would require a single static color model manully scaled for 12 sizes (1 mdl for all 6 races x 2 genders x each color), not very practical (unless you wanted to separate parts like the Drow Valsharess Headband, or Bugbear Earrings...)
(When i made head aligned VFX, it took me a full 8 hour day to make 3 sets of vfx, as I had to manually position mdls for male and female demihumans)
I'd suggest that you just make them CEP/Sinfar* Style Helmet Heads, Its less work, since helmets scale to al dynamic player races for a single item by 2da settings automatically for each race, and have better color options, (you can still PLT color them like helmets), and wear like a "mask" if you want to just take on and off as a helmet, for disguises, as opposed to having to script removing a head entirely, then putting on a single color head VFX...
(you just have to plt the inventory gfx, like the CEP Dragon/Rakshasa/Mummy/Zombie/Bear Helmet Heads Have '>)
Or just make a system for your project that lets you change heads and body parts (dynamic wildshape) on the fly with scripts (no extra content needed)
Example = The Hat of Disguise (Disguise Kit/Silly Putty): Change Head on use by menu (allowing only script approved heads, and remove, to restore PC head)
(BTW 99% of them have been converted to Sinfar Helmet Heads aka Heads_v2, you have my permission to use all my converted heads, at least '>)
As far as i am concerned, anything I have posted on the Bioware forums and NeverwinterVault (IGN/Org) are public domain (unless otherwise noted, still respecting any source artists permissions content may be based on) so feel free to fold, spindle, mutilate, evolve, rip or de-construct as fit your needs.
(The only heads faces i made myself were the female vampiress skin (mdl was nwn ch 1yuan-ti) and the hooded lord of worms "wormfaced" version.)
(*I think the original 2002 Helmet Head "Masks" were actually pioneered by Kinarr Greycloak, if i recall...)
http://neverwinterva...n1/hakpak/masks