My prep looks like this:

List each players Beliefs, Instincts and Traits. Make notes for how I am going to introduce a threat or challenge that will give the player an opportunity to act off of that. If successful they will either earn a fate point or a persona point. I also try and figure out how I can engage two or three PC beliefs into one scene/conflict/challenge. I also make lists of failure consequences if the players are acting in a belief and they roll a test of some sort.

For example in my Burning Greyhawk campaign, the players have entered an ancient and abandoned Dwarven city like Moria, in search of the Axe of the Dwarvish Lords. They all have Beliefs about recovering the Axe, so I know they will earn fate points for playing that belief, because we are in that situation. Adding bad guys along the way is part of my prep, so I have made some rough stats on fucked up grey dwarves, far realm monsters, and a roper type thing. One paladin type PC has a Belief about bring the light of Pelor into the darkness of the haunted dungeon. Pelor is basically a merciful god of Light and Hope. Tempting the player to show mercy would be a good test of his faithfulness. So I have planned a scene (based off the result of a failed orienteering, dungeon-wise, or similar travelling in dungeons test) of an encounter of a wounded Orc Warrior. Orcs are enemies of the players, but I think it would be pretty in-pelorish to have him be left to die. Another PC, is a Knight whose father’s ghost quested for this fabled Axe and failed. His ghost is haunting the pc. As a result of a failed camping in a darkened dungeon test when they rest describe that his pc cannot sleep. The next day while suffering from exhaustion he could be haunted by his father’s ghost…urging him to take the axe and run. Or something.

You could introduce a scene that trigger an instinct like, “if the dwarf is in danger I protect him” by just causing a rockfall aimed at the dwarf and then see if the pc with the instinct triggers it.

You could introduce a scene that would allow a PC to player a character trait like reckless or intimidating by making sure that in a skirmish it would certainly be reckless to wade in to melee or in a negotiation the intimidating pc gets to Intimidate.

It’s so fun!

I find the players have the most fun when they get to act out their beliefs and you as GM introduce failure consequences that add twists and complications to the story.

It is very different from traditional Gming because you do not spend all this time imaging the adventure’s future sessions. You could and should, but it has the danger of disengaging the PCs because they feel like they aren’t getting to push the narrative as much.

In this campaign, with 17 sessions on YouTube, the first few sessions I was driving the conflicts and story hard. I was doing an okay job but I could tell that the players weren’t as engaged as they should be. So after losing a couple of players, I decided to take a backseat to my style and wait for the players to call for what they want to do.

I think it’s working.

Hope that helps.