What is it? – Think about what we do when we construct any sewn project.  Most likely we take large pieces of fabric and cut them into small pieces of fabric and then we sew them back together into large pieces of fabric again.  And it’s all done with some creative vision in mind.  If we measure, mark, cut, pin, press and sew accurately the result is something that is pleasing to us.  If we don’t . . . ah well, then not so much.  But there’s more to consider.  More effort…