This deceptively simple tile was so meditative because I took my time with the linework.
A great trick to use, to get the spacing even is to “divide and conquer.” What I mean by that is to begin by dividing the space in half, vertically. Then divide each half in half again. Repeat until you are happy with the divisions.
Then divide the horizontal spaces. In the case of this tangle, they are equal to the width of the vertical divisions, making a square. Or there about.
The shading is simple, but it adds so much dimension to the over-all appearance.
Zentangle drawn on Stonehenge white using a black, Micron pen. Shading done with graphite and colored pencil.