Currently developping a 3D Darth Vader helmet to use for 3d printing.
Based on the return of the Jedi version, try to be screen accurate.
Darth Vader helmet - work-in-progress 008 from 3/4 view. Refine the chest and shoulders. A bit of the mask
Darth Vader helmet - work-in-progress 007 from 3/4 view
Darth Vader helmet turntable - work-in-progress 007