To whet your appetite and keep your writing fingers limber, take a good look at the photo, or let a prompt settle in your mind. Set a timer for a reasonable amount of time, be that five, fifteen, or thirty minutes. Then start writing.
Tell the tale of a couple who finds something odd in their selfies when they return home from vacation.
Do you like to take pictures of yourself? Why or why not? Experiment with taking at least one selfie per day for a week and write about your experience.
Write an article with tips for people who want to take pictures of themselves with their phones.