Draw a light oval or almond shape for the eye outline
Add a curved upper eyelid line
Add a lighter curved lower eyelid line
Draw the iris as a circle inside the eye
Draw the pupil as a smaller circle in the center of the iris
Add a small highlight in the pupil or iris
Darken the upper edge of the iris slightly
Draw the inner and outer corners of the eye
Add eyelashes along the upper eyelid
Add a few shorter eyelashes along the lower eyelid
Sketch the crease above the upper eyelid
Refine the eyelid thickness and eye shape
Shade the iris and pupil
Shade under the upper eyelid for depth
Add subtle shadows around the eye
Erase extra guidelines and clean the lines