That's it for the initial sketch! From this point on, press harder with your pencil to get a more defined sketch.
Step 6: Draw the eye inside the bison's head using the lines as guides for placement. The shape of the eye is similar to a football. Draw a circle inside of it for the eyeball. Shade in the bison's eyeball except for a small circle to represent glare. Draw some lines surrounding the eye for extra detail.
Step 7: Draw the curved horn on the upper left side of where the guide lines intersect. The shape of the bison's horn is similar to a fat letter L. Draw quick, short strokes at the base to represent this animal's fur.
Step 8: Draw the bison's muzzle outside of the circle, on the lower right side. Draw a shape similar to an upside-down triangle for the nose. Draw an angled line inside for the nostril. Draw two short lines below the nose for the bison's mouth.
Step 9: Draw a curved line under the horn for the bison's ear. Draw a small line within the ear for structure.