This is my response to challenge no. 3. Well out of my comfort zone: abstract in ink.
First some random strokes of the pen - a loose hatching. Then drips descending and pooling. Then flicked on necklaces of greens and black, prodded and manoeuvred in more or less diagonal lines. Green twists of the pen. Black circles.
I ringed some of the dots and then, feeling I was closing things down, wandered with some open lines of blue, decorating existing shapes with lobes and cilia like script. I certainly do not know.