Here’s a little mini I made for fun. I hauled out a bunch of blue and purple fabrics, and cut 1.5″ squares, then sewed them together.
I was surprised to discover how obvious mistakes are at this size — it’s really easy to tell if one of your tiny squares is off a bit! A fraction of an inch really matters, when your square is only an inch big!
I actually had to unpick a couple of rows and restitch them more accurately. Even then, it’s not perfect! Another time, I think I would do something like this as a foundation-pieced block, so that each row and column is as accurate as possible.