Great work Bob!
Very cool displacements and I think the models turned out pretty good.
Perhaps a tad too light here and there, but the vast majority looks really good!
I especially like the striking light.
A useful tip perhaps:
It's not necessary to adjust all your textures in photoshop for brightness.
In the object-loader of the population go into the internal network until you can see the individual shaders for the leafs etc.
Then open a shader and increase the "diffuse colour" setting. Usually this is set at 0.5, but I know Walli adjusts this as well.
If you increase this value then the brightness will increase as well.