I went a little nuts trying things out:
|Most of the dark blue marks were made with various household items.|
The stylus had the best precision overall (although not perfect by any means), being somewhat more precise than using the airbrush (or spray paint) tool with a finger. For drawing free-form lines, the stylus works best with the regular brush tool. It's not really good enough—it's too spongy—to make nice, hand-lettered labels the way I did back in non-digital (ink) drafting days.
|Here are a few hints of the geology to come.|