“Find a subject in front of a background with depth. Take a close viewpoint and zoom in; you’ll need to be aware of the minimum focusing distance of your lens. Focus on the subject and take a single shot. Then, without changing the focal length, set the focus to infinity and take a second shot.”
Here are my images focused on the trellis. You can see the background beyond is quite blurred making the fence the subject of the picture.
And with the change of focus. (Not an especially pretty view, but still)
The summer house is framed by the foreground. Slightly better composition perhaps!