Polaroid Style Candid Photo with White Curtain Background

Make an image that looks like it was taken with a Polaroid camera. It should feel like an ordinary, candid photo with no prominent subject or props. Add a slight blur and keep a consistent light source, like a flash in a dark room, diffused across the entire frame. Do not alter the faces. Replace the background behind the two people with white curtains, with the guy putting his arm around the girl's shoulder.