Contour Drawing Shoes

The second half of my first art assignment this semester. We got to look at the paper for this one, but it was still really frustrating because we basically couldn't use erasers. And drawing with charcoal is hard enough to start with. It's the same three shoes from the blind contour drawing, just arranged a little differently. I had some pretty bad mistakes, but I think that for the first semi-realistic drawing I've made in about 10 years, it's not too bad. >.<