We're told that to make a good lecture, you tell the audience what you are going to tell them, then you tell them, then you tell them what it is you told them - ie. introduction, explanation and summary.
In a photograph, think of a bold graphic to start, a more detailed story to be futher explored through the details of the image, but leaving you with that image of the bold graphic as you leave (presumably hopefully enticing you to come back, look at other images by the same photographer, or heavens above, possibly even dropping some money to buy the damn thing.
Think of Pepper # 30 - as you approach the print, or first see it on screen, you see the sensuous curves of this wonderful shape. As you spend more time with the image, first you realize it's only a pepper, then you notice how wonderfully the image glows and how light interacts with the Pepper. Eventually you notice the curving lines of the tin funnel in which he photographed it, but you leave thinking of the sensuous curves.