It's easiest to start off with a shape you know. Draw an almond or football shape.
Look at your eye in the mirror. The bottom half is a lot flatter than the top. Adjust your bottom line.
A calm restful eye has the iris disappearing under the top lid like this:
Make sure when you draw in the iris and pupil, that the pupil isn't tiny. That makes the eye look afraid or psycho. A peaceful look is one where the pupil takes up about half of the iris in size.
The upper eyelid has a shelf, too, but because of the angle you look at eyes, you often don't see it. However, it casts a shadow across the eye. In the iris/pupil part, that shadow will be dark, anywhere from a 7 - 10 on the shading scale. (See lesson 1 a). Also, circle in your highlights. They will sit below the shadow line.
Shade in the tear duct, leaving a couple sparkles. Darken the outer edges of the lash lines (we are doing a female eye. For a male, you leave the lines light.)
I also went back and softened the outer edges of the iris by putting a soft lighter shade just outside the edge of it.
Next week: How to draw a nose.