So last night as I was just about to fall asleep, it hit me that I'm about to sew the Fairy Tale dress in cotton organdy. Organdy is sheer. I'm going to have to do something about the seam allowances and zipper! I know there's more than one way to tackle this and I would really appreciate any feedback. How can I make the seam allowances neat and tidy but still maintain the floaty quality of the organdy?