One of the exercises in The Creative License (by Danny Gregory) is to draw a bagel. Not just the way you think it is, but really look at it and pretend your pen is following the surface of the bagel. Include onion flecks and seeds and whatever else is there. He said not to just start dotting randomly all over, but to really draw the things they way they are and where they are. I had to laugh because I would have just dotted all over the place if he hadn't said not to.
It's not a perfectly round bagel, but it does have rounded edges so here it is.
In spite of the fact that a micron pen doesn't really do light lines, I'm pretty pleased with it. And I get to have a bagel for breakfast tomorrow to boot.