Hello out there. I started making the covered travel size baby wipe cases and my first 2 turned out really cute. The past few I have made won't stay closed. I used the Huggies ones for all of them. I thought maybe the hot glue gun warped the plastic but I used E600 on the last one and it did the same thing! What am I doing wrong? I am seeing a bunch of old friends tomorrow that are now hoity-toity and I was going to give them some.