This is a quick and dirty modeling effort to illustrate the application of ambient occlusion rendering in a composite method.
This is the original rendering of the model with its material applied:

1
At this point I have only dropped in a generic sky composite:

2
Now I have created a separate rendering of just ambient occlusion set at a spread .08 and a distance 10


3
As an added effect I have added a bluish colorization to the shadow.

4
As a final effect of adding a richer shadow, an ambient occlusion rendering (spread 2 distance 10) is added:
