Arlene, I never went into any detail since it was an unproven (and still is) experiment. This stuff is really thick and heavy-weight. It is easy to cut to size with scissors or a sharp knife. I allowed enough extra on the sides to actually bury it 6" under my mulch surrounding the greenhouses. Also, for the doors, I cut it to fit but allowed an extra 3-4" so that I could lap the ends. I then simply unscrewed the panels, first the top, doubled the top end, and screwed the solar blanket material and paneling back to the framework. I then did the same for each side, and finally the bottom. To hold the long runs down (one side, then going over the top, and then down the other side), I ran aluminum wire long-wise across the material every 4-6' or so. Thus for my 10' wide greenhouse, I would have a total run of perhaps 36' of solar blanket with 2-3 cross wires on each side and 4 cross wires on the peaked top. I just loosened a screw, wrapped the aluminum wire around it, then did the same thing on the other end of the GH. So for the free-standing GH, I have ten, 12' long wires (three per side and four over the roof) and three, 10' wires (the non-door end). For the lean-to, I used five, 12' long wires (over the roof that slopes to become the side) and two, 10 wires (the non-door end).
I hope this is fairly clear. I could draw it in one minute but it is harder to put it into words.
P. S. Did I mention that I tend to over-engineer things I do?