I am trying to create a story map using the data-driven method described in Cooper Thomas' blog https://storymaps.arcgis.com/stories/53d9d11a512042e7be18a2a32c981570 In step 4 the instructions say: "The map tour builder will automatically determine the point's location, and use any attached images as the place's media." I have tried several methods to attach the images to the point feature, including uploading the image to AGOL, sharing publicly and then copying the URL. I need some more explanation please.