Bracken and its shadow

I was moving a little stool around the garden and suddenly noticed that the shadow of a leaf of bracken had fallen across it. I became intrigued, out came the camera and I wandered around with the stool, placing it under various plants to see the effect of the shadow. As the sun moves around I will have another go with other plants, but I realise that the "object" needs to be horizontal so that it is not too far from the surface of the stool (the seat part is canvas, which seems appropriate)
This could be the start of something that will grow.