Blender 2.6 Modelling Tutorial - Making a Party Mask Part 1 Making the Topology Using Face Loops... really this could almo… | Blender tutorial, Blender, 3d tutorial
cycles render engine - Image texture to partially mask part of material - Blender Stack Exchange
Mask Tools - Released Scripts and Themes - Blender Artists Community
Use masks as part of materials in cycles - Blender Stack Exchange
Request : Mask Node in Shader Editor — Right-Click Select