Step 20: For a more finished look, carefully go over the final sketch lines with a pen or marker.
Step 21: After inking, get rid of every pencil mark with an eraser for a cleaner drawing.
Final Step: Color your BB-8 drawing using color pencils, markers or even crayons! Use yellow-orange for part of the head and the circles in the body. Add gray to the metallic sections on the head and inside the circles. Use red and green for some of the lights on BB-8. Color the lenses and the opening in the body black. BB-8 is white but is a little dirty, so add a liberal amount of peach or light brown randomly all over the body. Add some gray to the right side of the body for a shadow and to make the shapes more three-dimensional. Color the flame blue.