Learn how to draw happy and sad cartoon faces with this video ... All done. Now, let’s try drawing a sad face. Like before, let's draw an oval for the head. Now, draw an upside-down smile.

Or you could even draw yourself next to it.' Have fun with your drawing. The tips above will help it to be recognised as T. rex, but you don't have to make an exact copy of Zach's cartoon. It's ...