nice work so far, there are some tips.
the white marks shows a more noticeable place for hair highlights.
you put the eyes shocked, some cartoon styles uses the eyes that way,
the thing in dark blue is how the eyes tend to be without emotion.
the nose is upward, so complete the nostril to the tip, like the purple example on the side of the nose.
you did okay with the mouth shadow, but remember the shadow is
because the mouth is in front of the chin, not just because of the size of
the lower lip, so the shadow must have the muscle shape, not the
bottom lip shape.
about the ears, you put the ears out of place, remember the ear
is linked to the jaw, so at the sides of the jaw, there must be the ears.
your jaw does not link to the ears, so you must edit the jaw or the ears placement.
the rest looks okay, keep doing it.