So, from just one leaf
and this wonderful bundle of prickles was my model for drawing without looking ..... turned out rather porcupine like!
I'm someone who doesn't like the D word. It felt like writing morning pages - not lifting the pen and paying attention to the object rather than thinking 'what next".
Now I know this is called blind contour drawing ... more details here https://en.wikipedia.org/wiki/Blind_contour_drawing and in many other places on the web.