I was doing an alpha study for my Texturing for Games class. we were instructed to create 10 distinct plants using alpha maps. Each plant i created was a square plane with 10, 8, or 6 segments on length and height. To those i added wave, ripple, noise, and then edited them slightly using soft selection. The trees are simple cylinders with some of the same modifiers. I tried various lighting systems and settings, and finally came out with something i think looks pretty nice.
First: Here is the scene as seen on the camera with a standard material applied to everything.
This was the first lighting render. (took close to 3 hours to complete.. haha)
This render was done using photometric lights and exposure settings.
And this render, though it was second, is the one i like the best. and surprisingly it only took about 5 minutes to complete!
This alpha study was very fun to do, and it has brought about many ideas to use alpha maps in some of my older models, in order to conserve poly count.