The main idea of this design is the book's main character, Suzy. She is wearing a WWI pilot outfit with the red scarf. And on that flying red scarf is the book tittle. Behind her is a forest surround the Village she living.
On the back cover, I draw Suzy run on the street that lead to the Village.
I choose dark colors to show the mystery theme of the story. Every details you see on my design, I illustrated them by myself, even the title, the subtitle and author name was my hand written.