How to (properly) Draw a Crescent Moon - That Irks Me

Occasionally, you may come across an illustration of a crescent moon with circular shading. That's WRONG! Watch to see how to properly draw one (with backup "evidence").

Music in this video (downloaded from the YouTube Audio Library):
The Messenger
Path to Follow

Alternate Title: That Inks Me
Get it? Because you know, colour and ink? So punny...

Видео How to (properly) Draw a Crescent Moon - That Irks Me канала Frame of Essence