Multilayer stenciling is really hot right now in the papercrafting world. So I designed a set of stencils that when used as directed, can reproduce the look of a Texas Star quilt.
There are only three stencils, and each one does half of the stenciling for each color. Then you flip it over on the long side, match it up to the already stenciled bit, and color again. That way you generate a 3-color quilt as pictured in the example (colored in with colored pencil). Or you could color the quilt with up to 6 different colors, although it might look pretty chaotic. I’ve done four and that worked great as well.
you could avoid having to eyeball it by just using any object w/a 90 deg angle. like a T square. just stick the paper into the corner, then put the stencil on and line it up. no eyeball required.
that, of course, presumes it puts the image where you want it, likely because the paper would be the same size as the stencil. but preplanning that if you’re using it on the same size paper all the time would make that work nicely.