Add the fur underneath the eyes in white,

This is a better picture of the white fur.

Now start to outline the ears with your #4 round.

Add some fur on the top with some "tiger stripe " strokes.

He then added some black on the eyelids. Notice the inside corner of the eyes...there is s little swoop down.

Now continue to outline the fur with your #4 round  and make the nose and muzzle with little dots in the muzzle.