Then I took a self sharpened bamboo stick with pure chinese ink, and made the drawing in my large watercolour sketchbook. It did not go smoothly, either the ink blotted, or it was too light grey. To much distance between deep black and grey tones. Something to figure out.
Then I added the negative space with a wash of sepia acrylic ink.
I am pleased with the result, but there is stil room for improvement.