Doodle time!

I first doodled in permanent ink, using a Micron pen:

I then added some bolder lines, in watersoluble pen:

and then filled in these shapes:

Using my Koh-i-Noor watercolours, I filled in the shapes with reds:

then I cross-hatched around the doodle, using the watersoluble pen again:

using a bit of water, that gave it a nice grey wash, finishing the doodle: