by Tommy W
This tessellation shows translational (slide) symmetry.
The "tile" (tile = repeating shape) is very neatly, precisely reproduced and fits with all the other tiles perfectly, without gaps or overlaps. That's what a proper tessellation does.
However, only two of the four sides look like parts of a head: the top and the left. What if Tommy bettered this by changing the outline 'til all 4 sides remind us of face, hat, hair, and jawline? I'd like to see that.