I find I'm more accurate if I cut the sqs first & then sew & press. Both methods are correct and they are also basically the same amount of work. It is a tad faster to sew the stratas together, but it takes longer to press them in order to not distort so overall you will find yourself spending very close to the same amount of time with either method because you still have to cut the stratas in to units. Judy Martin also prefers to cut sqs & then sew them. I saw her mention this yrs ago in her newsletter so I e-mailed her to thank her for saying that. The next month she quoted me in her newsletter. When I saw that I just about fell off my chair! LOL