This almost looks like something you might see looking in a microscope. Although this Zentangle is very simple with only two tangles, it is also very complex with all of the layering that is happening. It took a while to do, but it was a lot of fun!
I ended up breaking the rule I set for myself (white paper, black pen, graphite pencil) by adding the lighter grey Printemps in the background. I didn‘t want the Ix bars to get lost into the background, so the higher contrast was needed. The blue appearing spirals are there because I picked up the wrong pen, and drew one… then I added more to make it look like it was deliberate.
Zentangle drawn on Strathmore Vellum Bristol using a black Micron pen, and warm gray and gray Copic Multiliner. Shading done with graphite pencil.