i used to draw shapes like this on textbooks or test papers with marker pens.


keys:
- space: play / pause
- S: save as png
- E: save as png with a transparent background
- D: duplicate pixels to make it deeper


features:
color palette: black (5%) / white (5%) / monotone (18%) / duotone gradient (72%)
paper: Regular / Smooth (10%)
wet: false / true (40%)


caution: the result depends on window size.

made with p5js