Start with a circle and guiding lines.
The eye is a sphere about the size of a golf ball or table tennis ball, but the majority of it is hidden by the structures of the skull that support and protect it. Guiding lines are used to estimate the position of the upper and lower lids. The top crease of the eye is actually the top of the eyeball that is covered in skin, and the bottom of the eyeball can be felt just above the cheekbone.
Connect the guiding lines.
The next step is to connect the guiding lines to create the tear duct and outer corner of the eye. There is a slight overlap where the upper and lower lids meet at the outside corner of the eye, and the tear duct causes a little drop at the inside corner of the eye.
Add in the eyebrow and the iris.
Rough in a simple eyebrow that is slightly longer than the eye. Usually, eyebrows are larger by the nose and then taper towards the outside of the eye. Many people also have an arch in the middle of their eyebrows. The iris is the circle of color in a person's eye. It typically is large enough to just touch the upper and lower lid when a person's eye is relaxed.
Add in the pupil and fill it in.
The pupil is the black portion of a person's eye. It is usually towards the top of the iris when a person is resting, and the top of the pupil will be slightly covered by the top lid. When you fill it in, make sure to leave a little white spot. This shows reflection and makes your drawing more realistic.
Add in details and erase excess lines.
Finish your drawing by adding shading around the outside of the eyeball. Create a pattern in the iris and add lashes and texture to the brow. Shade any areas that overlap.
Now that you have drawn a basic eye, look at the following images and draw some different eyes. Click on the images to make them larger while you work. Look at the captions for hints and helps when it comes to drawing these different eyes.