Step 1: Begin with the nose by drawing a rounded "W".
Step 2: Add the mouth by drawing a curved line from the bottom of the lefthand side of the nose, and bringing it off to the right.
Step 3: Add a small semi-circle below the mouth for the jaw.
Step 4: Using a tight zig-zag line, draw small spikes above the nose, down to the end of the mouth.
Step 5: Add some zig-zag spikes above the nose, and some lager ones below the mouth.
Step 6: Draw an oval for the eye.
Step 7: Within the eye, draw a circle for the iris.
Step 8: Add a tall layer of zig-zag spikes above the nose, next to the eye.
Step 9: Add a taller layer of zig-zags above the previous one.
Step 10: Add a third set of zig-zags, about the same height as the previous set.
Step 11: Finally, add the last two set of zig-zag spikes, bring the back toward the bottom of the head.
Step 12: Your porcupine is now finished!
How to Draw a Porcupine Head – Step-by-Step Tutorial