Quoted from nerdygrrl:
Yeah, when my friend and I tried to lay it down we were just baffled. There was no decent way to line it up. I think I'll start with the yellow and go from there. At least then we will have reference points. I'm not at all happy with the stencils. How hard is it to put in registration marks?
After I lined them all up on a sheet of glass (use a really bright work light underneath), I stapled the sheets together (use staples at the edges both horizontally and vertically to hold things still). Then I snipped little wedge shapes in the lower corners. At each corner one from the side and one from the bottom. They were about 1" deep from the edge and 1/4" wide. I only had two stencils to do.
It would be nice if the references were part of the stencil of course. However no after-the-fact references will be perfect. But, they were extremely helpful when putting on the second stencil. I started by lining up the references and lightly tacking on the stencil. I observed issues so I pulled it off and remounted it but the references let me shift it by a known amount. I took 4 tries before I was happy and you really can remount it that many time if you only press it on lightly.
I also did quite a bit of trimming with a razor and also added some tape to adjust some shapes here and there. The biggest issue boils down to the lack of overlap. Its ridiculous. Looking carefully at my High Speed cabinet I can see a healthy overlap of ~1/8" in some areas.