tu make a pick. Have a lot of fans answer. Then contact the staff of Fanpop. Of course, if the person who made the club still runs it (meaning they haven't left), then the process should be easier. If you're the owner, tu go to the editar button on the parte superior, arriba right of your spot.
1) Make sure people wants the icono and banner to be changed. 2) Have people suggests imágenes for the banner and icon. 3) Make a pick using the imágenes that were suggested (also make sure the pregunta is along the lines of "Which image would tu want the new icono to be?") 4) Set a due fecha to about a mes o so, that way enough fans would answer it. 5) Go to the bottom of Fanpop. There will be blue words. "Contact Us" is on the right side. Send the link of the pick, the image, and a description.
..I'm going por what I've heard around the site. I'm not sure if any of the steps are wrong since I haven't contacted the staff yet.