I wanted to do another tile for the Dex challenge as my first one wasn't strictly a monotangle. This one is. I used the two string method by attaching two pencils together with a rubber band. When I found the two lines to be a little two close together, I put two Popsicle sticks between the pencils and then I was happy. I explored some different tangleations of Dex here.
This tile uses a brown Pigma Micron pen. I used a tile I had hand colored with watercolor paints. It's shaded first with an orange colored pencil and then again in a smaller area with a brown colored pencil.