This is my cat, Midge. She's a sleeper and a silent follower, and likes to stretch out in front of warm things. I took a series of pictures of her and then chose one to trace in Adobe Illustrator.
Her coat is brown ticking, which displays as very complex from all angles - it's almost like a squirrel's coat. I spent a lot of time on her coloring until it all came together. Then I chose a background that played on the coloring to make the image pop.