Show HN: Inkwash, a watercolor sketching app and explanation (opens in new tab)

I love nature journaling. Over time I've developed a style and approach that I like for capturing sketches quickly, using a Pilot G2 pen in combination with a waterbrush. This lets me add linework and shading simultaneously (I dual wield with the brush in my left hand) and forces me not to be too precious about the final result - there will inevitably be smudges and imperfections, and there is no undo with pen!