Do you want a graphic that is customized just for your account? Maybe to add your photo or something to personalize it. There are way too many accounts here that use the same pics. Stand out among the rest.
Remember this is a $5 gig- depending on your level of experience you could be making a lot more income . First impressions is always a lasting one.
Some users use a female as their graphic to catch the eye and the owner is the opposite. Its all up to you - Want more than one picture for your pages.