A skydive from 16000ft lasts only one minute. In that precious time you can screw up in a hundred different ways. There are a thousand different ways to screw up a drawing in one minute, and this is a catalog of a few. I shall draw you on the beaches, on the landing grounds and on the hills, and I shall never surrender. And you will comment on how "Meh, it's ok but it doesn't really look much like me", 'cause everyone's a critic, goddamit!
Just spent a week teaching a course on Escherian tilings at Universidade Aberta (the Portuguese analogue of the Open University). This is a tiling I made as a demo for the students. It is a deformation of a regular triangular tiling of the plane.