Just use the pencil to draw, there is 16 different colours to use, (you could use the white as a rubber) adjust the line thickness, the space key changes the background colour, and press the clear all button to clear all. But mainly, have fun making a piece of artwork!
This didn't take very long to make, no credits as I thought of doing it. If you remix (with maybe more colours, etc.) make sure to give credit.
