I get fascinated by the way the shadows move, you can play with scale and even bend the shadows over different surfaces.
My phone has a really powerful torch so I can just shine that through the leaves and try and hold it steady when there is a composition I like on the sketchbook page.
This particular composition was inspired by and artist called Paul Morrison, who plays with scale, and black and white organic imagery reminiscent of book illustrations but blown up to an architectural scale.
Shadows are a recurrent interest of mine, one aspect of which I would love to spend more time exploring is shadow puppets... just leaving this here, the
Shadow Puppet of Bima