Meet Isaac – a Jack Russell Terrier and proud owner of my friend Rob! In this project, you first set up Isaac’s facial proportions and render a contour drawing. Then, you add texture to his fuzzy face with hatching, and shading to his nose with squirkling. This project is divided into the following six sections: SKETCHING PROPER PROPORTIONS: With a simple grid as a helpful guideline, you draw the various components of Isaac’s face, ears, and neck.