I was asked by a friend to make cool ties for the soldiers for an online organization she was part of . I said sure. I made 150 100% cotton brown colored ones and they were rejected because I serged the edges instead of seaming and then turning the tubes. ? Well I gave them to a church member who sent them to her grandson who is in Afghanistan. She makes cool ties for him and always serges them. Anyone know why serging won't be accepted?