Some of the Nigerian masks are coated with a kaolin clay, making them very white.  In places the clay has worn off and so some of the wood shows through, giving the masks an interesting texture/coloring.  I was only semi-successful in capturing that look in this mask.

Stillman & Birn Epsilon sketchbook, Pilot Prera and Lamy Safari, both filled with Noodler’s Lexington Gray.  Brown and black watercolor pencils provided some color but I really needed a cream pencil for this one.