As limited as the uses of a blueprint may be, the combined forces of B-B PUD and your wife's anxiety will force you to come up with a set before you can begin work. I would be impressed with the fact that I made my own if I did not know how truly simple is the blueprint-making process. The first step is to acquire the necessary supplies including a mechanical pencil, 64 color Crayolas, and vellum paper.
Vellum is great stuff. It is a light, see-through material that looks like wax paper, only it's softer. It is especially good for tracing drawings, making blueprints and in a pinch it will serve as toilet paper. Although vellum is too expensive to become a ready substitute for this necessary commodity, it is handy to take on hunting or fishing trips. It is compact and, if carefully used, can go a long way.
Once you have gathered your vellum, mechanical pencil and parallel ruler, you are all set to start drawing. However, there is one more tool you may find helpful, the eraser. In the cosmic scheme of things, I find it is useful to be able to undo what has already been done. That is why there is a claw on a hammer. That is why there is an eraser on a pencil. That is why they put that clause in the marriage contract: 'til death do us part. (I personally prefer divorce over this extreme measure, but my wife tells me that death would be the result of marital dissolution anyway.)
Erasing is important, and, luckily, vellum possesses an astonishing quality of eraseability. You can make pencil marks seem as if they were never there. Which, for a guy who learns everything the hard way, makes learning the hard way that much easier.