I don't know who created it but its dis...wait for it..graceful to not add an icon or a banner.
you can make suggestions for what to use, upload them and then make a pick (with the link to the images) and when people picked their fave (give them a week to choose) message the f4 with the link to the "winner" (try papa or dave) then they will add the images for you. with 18 fans you might not have a lot of people picking but its the fanpopesque way of doing it rather than just adding something you think is good. also by making the pick you might alert the spot creator and they can make the changes.
ediTED: i just checked oot the images section and obviously the motherhead jennifer1985 had a similar idea and made some icon and banner suggestions. maybe you guys can team up!?