Step 6: That’s it for the initial sketch! You have the basic Knuckles shape, so now go in and tighten your drawing. From this point on, press harder with your pencil in order to get darker lines and a more defined sketch.
Step 7: Darken the shape of Knuckles' nose, and make the sides bulge more and make the corners rounder. Shade the inside of Knuckles' nose except for a small circle at the top to represent glare.
Step 8: Use the lower part of the circle and the horizontal construction line as guides to draw Knuckles' muzzle. The top part of his muzzle is made up of three lines under his eyes, and the bottom part is one long curved line.
Step 9: Draw Knuckles' eyes by using the initial shapes as guides. Make the sides of his eyes bulge out more. Draw a curved line in between Knuckles' eyes along with a line above each eye to represent a furrowed brow.
Step 10: Inside each eye, draw a long oval for Knuckles' irises. Inside each iris, draw a smaller oval and shade it in for his pupil. On the side of each pupil, draw an even smaller oval for glare.