Very nice! I’m a elementary/middle school teacher and I teach a computer graphic arts class. It’s a great step by step, I’ll use it this week. You’ll be famous to a class of middle school students in S. W. Ohio.
As a fellow architect and artist I can really appreciate these excellent sketches. They are dramatically clear. My office tends to use Sketchup and Lumion but these tend to create too much a final design atmosphere and do not leave so much to the imagination. I’ve begun to use concepts for just that concepts, and it works well.