Mike Sandlin's plans are exceptional. They're well organized, accurate, consistent and complete (and free!). I know this partly from mechanical drawing classes taken many years ago, but mainly by contrast to other plans. Without naming names, I've paid for more than one set that are incomplete and rife with errors; hand-drawn sections with cross-outs, scrawled illegible notations and inconsistent mark-up. The doodlings of a bored student come to mind.
When working from plans, especially those of us less experienced, understanding and visualization can be helped tremendously by transferring the parts into a program like SketchUp. Training and practice can make it easier to read a blueprint and turn parts around in your mind's eye, but nothing beats interactively turning an assembly in 3D, in real time. Best of all, measurements can be taken and reproduced. The risk is becoming too enamored of the program, and forgetting that the real goal is to produce a machine that will take you into the sky.
Here are a few SketchUp shots of the nose section:
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