This is everything I've created in blender so far.
Ignore the grass at the bottom edge of the picture. I thought the camera was higher up.
I have no idea why the leaves are semi-transparent. if I knew how to fix it I would.
The bark, leaf, rock, moss, and dirt under grass textures are from CGtextures.
Tree tutorial
Rock tutorial
Grass tutorial Note: I only got the coloring for the grass from the tutorial.
Teddy bear tutorial
Soccer ball tutorial

This came out pretty well and rendered pretty fast. it took less then an hour at 300 samples and full global lighting.