Notebook Doodles #6 - The Blue Obstruction

This one was actually a challenge that I set to myself to see if I can make a piece with only one writing utensil. It was kind of hard, but I was able to figure out the pen's dark and light points  I'm really not sure how it turned out, though.

Pen - gfwr white roller ball (by - Uni Ball) <- Basically the pen that you find in offices to promote the business, ain't nothing fancy