This week's challenge was the exact opposite of last week's. Use no straight lines.
(edited to add)
After seeing some other blogs, I like the practice of adding the pattern names and materials to the post. So, this was drawn on a 4x6 piece of acid free cardstock using Micron pigma pens, and cool grey prismacolor pencils for shading. The tangles used were: Opus (added aura), Ixorus, Pais, Betweed, Ahh, Blooming-Butter, Feathers, Printemps, Mulhouse Blooms, and Bubbles