The blue lines are the best brush control so far: about fifteen long strokes of an even width. The olive bands each have a dark blob at the left where the brush touched down too wet, and the brown comma box has a pale bloom in the top-left corner.

Crisp edges throughout, and the dry-brush box has broken, sparkly edges on purpose.

The red thin-thick-thin lines pulse in a steady rhythm, and the green leaf box is full of consistent press-and-lift leaves turned in different directions.