1. If you are working with tulle you need lots of patience and LOTS of safety pins. It is also good to not work with tulle in the presence of two year olds.
2. If you are adding a waistband to a dress, pin it on before you sew it (and mark where the two ends should meet in the back. Otherwise, when you zip the dress back up one side may be a full inch lower than the other - and that looks funny.
The dress before (lovely for my Christmas wedding, but wrong for my sister's summer wedding):
The dress after (tulle!):
The happy model wearing her "White Princess Dress":
A motion shot:
A happy flower girl!: