I struggled a lot, including tears, and many times when I wanted nothing more than to rip the paper in half. But I persevered. In fact, I didn't originally want to do a snake. I was going to do a dog midair catching a Frisbee, but as soon as I started sketching, I lost interest, and didn't feel motivated anymore. So I did a snake instead. It was mostly the scales that were hard for me. So many scales, each with a different shading and shape. But I did it, and when I finally finished and handed it in, I was so glad to be done.