Forest

The idea was to create an entire forest using a few trees. I found about 10 different images of trees on the net which already had the alpha channel attached. I brought these into Fusion and attached them to a particle emitter so that each of these 10 trees would be multiplied and randomized to create a forest-like effect. I animated a 3D camera. Simple track. Here's what the node flow looks like:

My first render went wrong because the particles kept flickering, meaning the trees flickered. I still can't figure out what's the problem. So will do that and post the final animation as soon as I'm done. Meanwhile, here's the basic look.

I'll explain more details of how I made this when I'm done with the final render.