They aren't scripted, so I would have a look for any mods, if not for using, for inspiring you how to do it. Some people just modify armors so everyone wearing that armor has also the detail. I'd make one aside, in a chest or to smith. Sorry I can't give too much help. Not an expert on this.
I know how to put armors and weapons to the world, or put them on npcs, but there is some accesories that use diffrente parts from the body, like back, lips or stuff like that... but i couldnt find the "Back" part... i just found alot of unamed ones.