By making 2 marks on the side of your thumb, and moving your thumb along as you work, you have a built in gauge for exact stitch length, without marking up your fabric. Genius, right? PLEASE NOTE: THIS IS NOT MY THUMB NOR MY IDEA. This anonymous thumb is perhaps the most intelligent thumb in all of history.
Make your own Apron Party. Even works for little girls. Start with the plain white ones from Hobby Lobby and let the little girls sew on the pre-hemed ruffles...its just a straight line from there! They can add flower pins or iron-ons to the top.