Step 11: On the front part of Lightning McQueen, draw two small rectangle-like shapes with a line in the middle of them for the headlights. The shape on the left should be right below the horizontal construction line inside the main square, and the shape on the right should be smaller and all the way on the right side of the front of the car.
Step 12: Draw Lightning McQueen's mouth on the front part of the car under the headlights. The mouth consists of a couple of lines that curve up. Draw a line in the middle for the teeth and a couple of smaller lines on the sides for the smile lines.
Step 13: Use the arc on the left side as a guide to draw the back of the car. Darken the arc until it touches the top part of the tire. Draw an angular line above it for Lightning McQueen's spoiler.
Step 14: Draw the side windows in the small area between Lightning McQueen's eyes and back part of the car. The window on the left is basically a small triangle, and the one on the right is a shape similar to a square with rounded corners.
Step 15: Draw the lower part of the car by drawing a line that begins on the upper left side of the tire, then curves down across the tire and continues to the right. The line ends on the left side of the front tire. Draw two small circles on the bottom left side for Lightning McQueen's exhaust tips.