I have a younger sister. She's a 16 year old darling. My dreams from when I was in high school are coming true. I get to boss her around and help her get ready for dances. She takes it like a champ.
I guess she trusts me. I have never made a dress and didn't have a pattern to guide me, but it worked.
I made the top out of crazy 80s curtain material handed down to me from my mother. The bottom is made out of some form of thin polyester. It's not perfect, but it's pretty darn close. And she loved it, which is what counts.