This adds a craftable nightingale mask to the misc. section while at the forge. It requires you to have Ebony Smithing. It's made with one void salt and one ebony ingot. The same goes for tempering. It has no enchantments so you can add yourself. Should be 100% compatible with any armor mods. Really bad clipping for the Hood and Mask if using Argonians, Khajiits, or Orcs. I apologize for this and will look for the fix. Elf race ears may clip slightly out of the hood. I used the base model but apparently there's a scaling issue. 

INSTALL
Whichever folder has your Steam directory
Extract to the Data Folder
C:\Steam\steamapps\common\Skyrim Special Edition\Data