the elastic headband is a great idea!
I purchase the no roll elastic unless it is for an infant, I find that that is way to thick for an infant tutu. in that case I do use the ribbon, becasue I let the tutu open in the back, so they wontbe laying on it making it uncomforatable. Unless the customer asks for a full infant tutu then I will use the thinist elastic possible. I really like the way the elastic holds the tulle! I finish my tutus off with 7/8 satin ribbon, weaving it in and out of the knots
BE CAREFUL tutu making is VERY addicting lol