Very Good! and Thank you! The Tape Measure and Re-size Model advise is perfect. Also, I took a second photo to get the Origin set correctly in my photo. I'm sure I could figure how how to orient it inside of SketchUp, but after watching the video I realized that if you start on the right foot, your odds are greatly improved. Also, it was very easy (as a Newbie) to re-orient the photo keeping in mind what I was trying to accomplish.
Thanks, again...