It was originally her idea to film propos on a stage with a script for Katniss to read. However, it was a total flop because Katniss doesn't come across well unless she's being herself, not what others want her to be. Fulvia's pride is wounded when Haymitch Abernathy comes up with a better plan to put her out where the real action is and film her as she is just being herself.
Later, Fulvia redeems herself by coming up with the idea of doing a montage of propos dedicated to the fallen tributes of the districts, such as Rue or Mags. They would contain commentary from Finnick Odair with the theme being "We Remember," read out by Claudius Templesmith. This would then appeal to the people of the districts on a closer level since many of them would have had personal feelings towards their own tributes.
Fulvia is one of the few named rebels that survived the rebellion.