most of my sessions are an hour long but i sometimes go for 3 hours. then take a deep breath and make a second one with the other piece of paper to use as a lid and take comfort in the fact that the second time will go much quicker and easier than the first time. ignore the obstacles that stand in your way. whenever i make one the night before i’m always so eager for the morning. this is an awesome project and a great idea. sounds like you went right before me. 