If you want to add pictures to your highlight on Instagram, there are a few things you can do. First, open the Instagram app and click on the three lines in the top left corner of the screen. This will take you to a menu where you can select which type of photo you want to add: a picture, video, or text. Next, click on the photo or video that you want to add and then select the “add picture” button. Once you have added the picture or video, select the “show as” button and then hit “submit.”