Position the box horizontally so that the widest panel is facing you. Mark the bottom outline of the cat's body by drawing 3 sides of a rectangle at the bottom of the box—the horizontal line corresponds to the cat's tummy and the vertical lines to its legs. Create an identical rectangle on the opposite side of the box.
When the paint is dry, glue a pair of wiggle eyes. Shape some cotton into two small ovals and glue them below the eyes. To add a nose, glue a small pompom, a round bead, or a circle made of craft foam or paper between the cotton ovals.
Create whiskers by cutting six short strips of fishing line or thin florist wire. Glue three strips onto each cotton oval.
Instead of a single color, paint your cat with two or more colors. Patterns like stripes, blotches or spots are also fun to make.
When painting using light colors like yellow or orange, you will need to prime the box with white paint so that any text or print on the box do not show through. Wait for the white paint to dry before painting with the final colors.