I always thought making a drawing or a painting would be much easier with one colour. I was so wrong.
The complexity reaches to strange levels and there was times when I felt nothing was going on, nothing seemed right, but still to quit wasn't a good idea, not only because the drawing was something I had to make for the exchange, but also because of the learning process. I can see now that I'm capable of making something almost monocrome.
Is it boring? For me, no, I don't know if it's for you.