I haven't been able to post sketches from the last several days as Dad's been away with the camera.
If you draw a squiggle so that the lines cross each-other anywhere except at a crossing of two lines and colour alternate shapes, it all works out evenly without exception.
Really, I play the violin every day but you would never guess I even know what one looks like from these sketches!
My fountain pen gave out
So I used brush and ink for the next one
And a rather uninspired one with a pen which was running out of ink.