If you want to make real splash in social media then cover images are more important. Cover photo is one of the first items seen by your visitors and its importance is immense.
Cover photos are different for profiles, pages and groups. These photos show what type of person you are; and what type of group or page is. This photo is most important, because people can imagine your personality by your cover photo that either you are a romantic, serious, jolly, loving, caring, pet lover, creative, cartoon lover or books lover. Because you will choose your cover photo according to your personality, so choice of good cover photo is most important. So choose a best photo for your account which can represent your personality.