Guys and Dolls

I'm auditioning for a local high school production of Guys and Dolls and I really want to be Sarah Brown! Most girls are super hyped about Adelaide, so I think I've got a good chance!!! That being said, I'm a 16 year old girl with a blonde mohawk and an atheist, feminist upbringing. My audition song will probably be "There are Worse Things" from Grease. I need serious advice on:

How to act Christian

How to act uptight

How to dress for my audition

Info on Sarah Brown

Info on Guys and Dolls

Info on the 1930s

Thank you and God bless you!