Not ONE pipped the wrong end! I had almost a dozen eggs with detached, severely saddled, ait cells. I can attest I hatched all but one thanks to @Sally Sunshine expert advice- and me doing exactly what she said to! The one that DIS was probably my fault for "checking" on it too much yesterday. Hard, sad, lesson learned because I DIDNT LISTEN! You keep saying you're "scared" because you've never done it like this before... Have you ever had shipped eggs with saddles and detached AC like this before?!? Just do what she tells you! Cut holes on the bottoms of the carton. Stagger which ones will have them, like a zig zag...that way, the chicks have room to flop out. Here's a good picture of the spacing I'm talking about, AND, a successful hatch! All pictures here pipped, zipped and hatched right where you see them. I used a clear carton because I couldn't find a styrofoam one... Good luck!