In Addition to all the great hints here, I chain my blocks. Sew Row 1 block 1 to row 1 block 2. Then chain row 2 block 1 to row 2 block 2 ,,,all the way to the end. Then I chain all the block 3's to the 2 blocks, then all the block 4's, etc. you end up with a chained top it is now easy to see which way to press the rows. Plus you can check that all is in order! I will try to find some pictures.