You know when you are laying your blocks out and you finally get the layout that really clicks for you. You pin the blocks together one block at a time, gather them up, head to the sewing machine and sew them all together. Now to sew the rows together. I lay them out again and for some reason the rows don't want to line up the way they did when you first layed them out. Some of the blocks line up with the same blocks and they just don't look right. I came up with a solution that works for me. I hope it works for you, too.
While you have your blocks layed out, as you are pinning them together, pin a strip of paper with the number of the row to the first block of each row. I sew the paper into the seam allowance so I don't lose the number. After I have all the blocks sewn together and have pressed them, it is easy to line up the rows.
It really keeps the frustration level to a minimum. Anything to makes things easier!