Step 11: Draw Cyborg's mouth under the nose as a long line. The line should be tilted a bit to give him a smirk. The mouth should be placed just outside of the lower edge of the main circle. Add another curved line above the mouth for the upper lip.
Step 12: Use the curved lines on the sides of the head as guides to draw Cyborg's ears. Darken the line on the right and add a few lines within the shape to give it structure. Darken the line on the right too but make it more angular because this ear is cybernetic.
Step 13: Draw the rest of Cyborg's head by using the initial shapes and lines as guides. Simply darken the lines as you follow the path of the guides. Make the right side of the head a little wider.
Step 14: Add the metal plates inside Cyborg's head by drawing a few lines. Draw a curved line on the top left side of the head, then darken the initial vertical construction line at the top. Then draw another line that goes from the nose down the head and curves across the chin.
Step 15: Use the lines under the head as guides to draw the thick metal section under Cyborg's head. Draw a couple of curved horizontal lines to create this shape.