NOTICE GuildPortal will be going offline (permanently) by the end of the month.

GuildPortal FAQ

Frequently Asked Questions about GuildPortal Hosting

Q: How do users add thumbnails to their profiles?

Each user would need to go to
“Characters/Settings” (top of site)  click on that a new window should open up and default to “Preferences” tab (if not click on “Preferences”)  
Now on the right about 4th down is “Thumbnail Image ULR” (  either add the URL here or upload it and place it here.