Do you press your seams open or to the side? My LQS said press to the dark side. But what do you do when you have 2 1/2" squares that are both light and dark and they are alternating? Then there is light and dark on the same side. The MSQC said to the side in the videos but Leah Day says press open. I know this is a personal preference and there is no right or wrong way but what is your preference and why?