The book revolves around a family that is trapped indoors due to a chemical weapon attack that has made the air unbreathable. The setting is roughly 1940s American South (think, Bible-belt).
The main character is a young woman (early 20s), so my idea for the cover was of a woman in Depression-era dress wearing a gas mask.
I recognize that writers are not the best at coming up with ideas for book covers so I'm totally open to other ideas, but I thought something that shows both the chemical weapons aspect and the time/place/protagonist would be important to attract readers.
If possible, I would like the layers used to create the cover so I can use them for additional marketing materials.