This work is based on "Decorative n’tomo mask" (https://sketchfab.com/3d-models/decorative-ntomo-mask-c0ea7f9acbe14815b80f6166a9273173) by Virtual Museums of Małopolska (https://sketchfab.com/WirtualneMuzeaMalopolski), licensed under CC0-1.0 (http://creativecommons.org/publicdomain/zero/1.0/).