Expressive eyes are the key feature in drawing people. Eyes are the windows to the
soul, so goes the old saying, and it's especially true in illustration.
First, draw a rough oval in the general shape of the
eye, then draw in a circle with part of the top reaching
above the top curve, adjusting the position to indicate
the direction the subject is looking (in this case, straight
ahead).
Next, draw a curve for the eyelid, using the top of the
circle as a rough guide. Erase the guideline.
Deciding on an eye color, fill in the iris with a light
version of the color, and draw a line of dark color
across the top of the iris - this gives the eye the illusion
of depth and 3-dimensionality.
Then fill in the pupil with a very dark color or black
before adding light-reflections as highlights. I find that it
gives more realism if the light reflections go across the
pupil and the iris.
Finally, add eyelashes, and sharpen up details.
