I learned to sew from a 4H club when I was 12. (My mother knew how to sew but never taught me.) I loved it, sewed many of my own clothes in those early years, went on to sewing for home and family and now, in the past 4 years started to quilt. I think it is one of the most important, rewarding and useful things I have ever learnt and here I am 40+ years later, still at the machine. You have likely instilled "the bug' into at least one of those girls. You should be proud of yourself, it was a wonderful task you took on.