A great idea for all your french doors. You could use it on your kitchen backdoor. Simple roll up under a flat valance in linen. Perfect idea for back door. You could also pair a piece of linen like a table runner or table cloth.
burlap kitchen curtains coffee sacks fit the width of the window perfectly. All I did was attach them to the inside of the window trim with screws, bunch up the fabric and tie it with hemp twine that I already had. Simple and cheap!