Before drawing a realistic eye, you want to start by sketching just a general eye shape. It is important to know the anatomy of an eye. Each eye has a pupil, an iris, an eyelid, a tear duct, eye lashes, and most people have eyebrows. Begin by shading in areas where it is appropriate. This will involve some erasing and rubbing. Pay attention to where the light is focused in your drawing and how it reflects in your glossy eye. It is best to save eyelashes for last. To draw eyelashes, simply rub out the ends and cover them. Keep in mind that not all eyelashes point up.