Hollibaugh is one of the first tangles I learned - and it's one of the first ones that I teach in my Basics class. So I really wanted to come up with a little something different here.
I started with one of my hand-colored zendala tiles and then cut small circles out of a slightly lighter hand-colored tile. The tangle is done with a sepia Micron Pigma pen and the shading with a coordinating Prismacolor pencil. I glued the small circles on after I had done most of the tangle and its shading. I added less lines and less shading to give the smaller circles more of a pop.