Capture a portrait, and create a diptych of an unedited version next to the edited version.
For this challenge, you must use the same image in two versions: edited and unedited. They must be presented side-by-side in a diptych format. All other Standard Editing Rules apply. Remember, do not edit the "before" version beyond a simple RAW conversion if you shoot in RAW. RAW+JPG would be perfect for this :-)