I used Deb Tucker’s Square 2 ruler in a class and made some square-in-a-square blocks and some Little House blocks. I put them up on the class design wall and moved them around to see how they looked. The best thing about the class and the rulers is that my sewing accuracy improved (which is the point).
I’m a “whatever” sewist: if my seams are consistent and somehow match up when I sew quilting blocks together, it’s usually an accident. I rarely take out a seam and re-sew it if the corners don’t match, otherwise I’d be there all day just on that one intersection.
I’m not in any way affiliated with the Deb Tucker ruler business, I’m just sharing a part of my sewing journey.