Step 10: On the lower, right side of the nose, draw a small, curved line for the first part of Sylvester's muzzle. To the left, draw a longer, curved line for the other half of the muzzle. This line should almost touch the lower edge of the main circle. To the left of the nose, draw a couple of short, curved lines for the wrinkles on the muzzle.

Step 11: To the left of Sylvester's muzzle, draw a curved, horizontal line for the top part of the open mouth. Draw this line along the initial horizontal guide. Below that, draw a long, U-shaped line for the bottom part of the cartoon cat's open mouth. The bottom of the mouth should extend past the lower edge of the main circle. Make the top of the open mouth wide and the bottom part narrow. Under the mouth, draw a small, curved line for the lower lip.

Step 12: Starting on top of the muzzle, draw a line that curves to the left for the first furry cheek. This line should extend far out to the left of the initial circle. Add a jagged tip at the end. Below that, draw a shape that's similar to the letter V on its side for the pointy tip of Sylvester's furry cheek. Connect the bottom of the cheek to the mouth. On the right, draw a similar shape, only smaller, for the other cheek. Don't overlap the muzzle as you draw the cheek on the right side.

Step 13: On top of the muzzle, draw two tall, thin arcs for the eyes. Draw Sylvester's eyes on either side of the initial vertical guide line. The eye on the right should be a bit smaller. Above each eye, draw a short, curved line for the eyebrows.

Step 14: Inside each eye, draw a small circle and shade it in for Sylvester's pupils. Draw the pupils along the left edges of the eyes. Don't draw them too big. Inside the mouth, at the bottom, draw two short, curved lines for the tongue. On either side of this Looney Tunes character's muzzle, draw two long lines and a small dot for whiskers and detail.