Doodle with Gray, Sepia, and Pink

For this doodle, I started with the corners and worked in toward the center. After drawing the black lines, I added more lines in gray, sepia, and pink, along with some coloring. I'm happy with the result.

• Copic marker colors used: Black, cool gray, sepia and pink multiliners; C0, C3, E11, E33, RV10, RV13+RV91. The + means one color on top of another.
• Paper: Tan Crane's card 4x6".