RE: Techniques for doing fuselage stitching?
Might I suggest that what you're all (beautifully I might add) replicating is "laceing" as in your shoes. The inspection panels were laced together to allow routine opening and closeing.
Stitching is more permanent. You don't tear the stitches out of anything unless you're destroying it.
MTC YMMV
Again STUNNING work guys!
Tom