How do you add a picture at the top of the page on a spot?

Right under the banner at the top of the page, click 'Edit Spot' and scroll down to the bottom. You can add your own images. Try to make the banner 800x100 at least because otherwise it will look wonky.

link
snerkie made a fabulous how to including pictures

"Once you've created the spot, you add the logo and banner by clicking the "edit spot" link in the upper right of the club page, just under the banner and the fanpop search bar. This will load a form where you can edit the description and keywords of the club, as well as upload forms to submit your logo and banner. Note: fanpop's site takes issue with some anti-virus/firewall combinations, causing the 'banner upload' portion of the form to disappear. If that is the case, you will have to either use a different system or manually de-activate your anti-virus/firewall software, then making sure to reactivate it as soon as the form is submitted.

Your new logo and banner should appear as soon as the page reloads."

(Excerpted from link)