Here I was adding some really basic lighting so that I could see the shadows cast by the leaves and also testing the positioning of the leaves planes. Unfortunately I appear to have a glitch in which the planes are somehow casting a shadow despite being affected by a transparency map. This is a glitch I have yet to solve.
Leaves Transparency Map
I still have to build the rest of the scene. Including the background plane work. But hopefully that will be something I tackle soon.