I knew I could find some help here, great ideas, video and links.
wsdimenna - I contacted Arizona rock and minerals and they really helped me with what I need as far as materials and how to apply their products. I still have some real Texas dirt and rocks off the Katy line and will incorporate these with the materials from Arizona rock and minerals. I will also purchase ground cover items from Scenic Express and Woodland Scenics to blend into my desert project.
Laidoffsick - great video and shows me how to get a really good base down. I think my ground cover blend will be a little different, attempting to match the color in the Southwest Texan desert where there is a little more "red" rock and earth. Thanks for posting this video for me, it was super.
I really appreciate all your help and will post "peeks" of how things are going down in the future. Believe me, I can use all the help I can get.......being old and grumpy.
Steve, Lady and Tex