Either paint the back of the repurposed glass pane door or staple gun a nice run of cool print fabric for this great focal point for pennies. --- i'd use it as a custom fence gate. Check out the selection at Antiques and More at Staley Road Champaign Il.
Love a door in a garden! Maybe as another "layer" to block the view behind the fence? Idea: don& have a cool old door? Take a hollow core and add molding or panels or paint. Distress. Seal so it doesn& fall apart in the weather.