JMoore - For the scrappy block I press all vertical seems on the odd rows to the left and even to the right. When rows are sewn together I press all horizontal seams down. For the background block I press the vertical seams to the right and the horizontal seams up. I haven’t sewn blocks yet but I think all seams will nest this way. Open to hearing a better way! Be sure to post some pics of your progress JMoore!