This is an optical illusion of a human head but the face follows you as you move around. Look up/down or side-to-side & it will appear to follow you.
This grabs people's attention & is a great conversation piece.
(FYI - The chin and top of head come out a bit rough, but it is meant to be viewed at a minimal distance anyway.)
*Inspired by Generic Human Head by Adam Gevaert & head in a block by francfalco
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