Perspective - Two Point Perspective - Distortions & Complications

Just to be upfront about this post, I DO NOT want to teach 2 point perspective. There are plenty of books and websites devoted to laying out perspectives by hand and computer. If you are looking for a basic tutorial, stop and look elsewhere. If, however, you know the basics, this post may be of use to you because it will address some of the problems normally found in perspective layouts. In high school I took a class in architectural drawing. It involved designing a relatively simple (indeed bland and boring) house, and then producing a fairly complete set of working drawings. In addition, the teacher allowed extra credit for the production of a rendered perspective of the house. I had never created a perspective layout, but after checking out an example, I found it an obvious trick. The whole process seemed easy and self-evident (I know that this sounds like boasting, but it is a true story). I imagine that I have undervalued the skill because of that early facility that I stumb...