On my k40 I generally start very top left and move outwards from there, as thats where the beam is closest to the mirrors which means less chance for power drop(not as big of a deal on glowforge, but still wise). Once I get about half of it used I flip the sheet over/rotate it and do the same again from top left. In other lasers you can also position numerically so it makes it really easy to repeat cuts and align stuff this way. I do miss that part about the k40…