pull
geometry out around eye to conform
to the eyes shape.
poly
split the inside of the mouth, eyes
and nose like such
Now
pull that geometry back a bit to make
the correct cavities
you
can make the ear using the create poly
tool under Polygon. Just sketch out
what your basic ear shape is going to
look like. If you do not like this method
you can extrude a face off the side
of the head and start modeling that
way.
extrude
the ear shape.
poly
split the shape to create the ear then
attach to the head