The Eye

Lately I have been trying to focus on how to draw the human eye. You can't just draw an oval and put a circle in it and call it good. More detail is required if you want the "real look". To do this, you have to think of it exactly as our own human eyes. For example, you should add more detail to pupil and iris of the eye. If you are advanced, even reflect things within it. Another thing to complete the drawing is sto add eyelashes to both the top and bottom lid. Everything should be realistic.

Here are some examples: