I learned a lot in my first quilt class years ago, but now I want to take steps toward improving. One thing I never learned is how to square up a block. It seems like all the books just tell you to "square up your blocks", and assume you know how. I kind of get it, but I just don't know where to begin the process. Do I find the center of the block and go from there? Pick an edge that looks straight and work from there?
New here, so forgive me if this has been answered many times before.