Tip: If it says thaw for 40 minutes, FOLLOW TO THE MINUTE. :D I left one sheet longer and couldn’t unfold it. So I had to roll it out.
Oh, if you HAVE to resort to rolling it out, make sure you only fold it, NEVER shape it into a ball. That’s the whole point of puff paste. It puffs up like that because it has been folded and re-rolled numerous times.
When unfolding, I find it best to slip a butcher’s knife between the folds, instead of trying to pull it apart with your fingers, which will stretch the dough.