Few crocheters realize the importance of exactly following directions
for the ends of rows. Skipping an occasional stitch seems a small matter
to many, when that stitch comes at the end of the row and an occasional
added stitch is decreed to be equally trivial. Yet frequently they spoil
the work. Many a woman while making an afghan, after hours have been
spent, finds that her work is all crooked, going off at an unexpected
angle, although she may have followed directions exactly, excepting as
to the ends. If you want straight edges, learn how the ends must be
worked and make each row exactly as it should be.