Thanks for the input and taking time to look. I fixed the typo.
A bit about my process. I don't use Layout, all these sheets were formatted in Photoshop after exporting JPG files from SketchUp. Also, I don't typically use SketchUp for presentation or marketing graphics. I use it primarily as a schematic design and design development tool and often export DWG files back to AutoCad for further development into the production of construction drawings. The images I posted were an outgrowth of this process, thus the simple, basic SketchUp rendering techniques you see.
Having said that, I am interested in exploring some of the photo-realistic / ray-tracing options for SketchUp. My next effort will be to find out which of the options out there are best for my type of work. Any suggestions based on what you saw in my portfolio are welcome.