The above images show the difference that ambient occlusion can make! The first image (upper left) is a render output with no ambient occlusion overlay. The image next to it has an ambient occlusion overlay. Notice the depth of shadow under the ceiling soffit, behind the couch cushion, etc. AO can be an amazing tool to punch extra depth into your scene. The final image shows a little post processing—lens flare filter in photoshop, tone adjustments, a bit of blurring, vibrance upgrade and other touches. Tutorials coming soon!