Like the challenge's designer, Nance, I was struck by the fresh, clean lines of the room and wanted to make a card with the same feel. This meant that I kept on wondering about additions and then deciding against them. The end result is very CAS indeed:
Made using: Stampin' Up products: Whisper White, Smoky Slate, Copper foil papers; Copper embossing powder, Totally Trees and Sheltering Tree (sentiment) stamp sets,