So I'd like to tell you guys about my current campaign maybe get some opinions or ideas so my setting is the Wild West in a fictional town in Oregon called Whisperhollow my players include a half demon and  a blacksmith with a crazed spirit of a hunter in his head anyways . Things kicked off with the introduction of asmodeus appearing in the inn run by the half demon . He's described as a large figure who no matter the weather wears a huge duster and hat that make it almost impossible to get a good look at his face he's a large man easily over 6 foot. Anyways the innkeeper got suspicious of him after a conversation and led him to the blacksmith when he asked about it then he pretended to leave anyways asmodeus asked the blacksmith to reforge his blade is almost inhumanley well forged and made of a material that he's never heard of called white steel which the stranger give him some of to use when reforming the blade .
Then he's followed around by other players which leads them to go to a farmhouse to see what he's up to after a sequence of tracking they manage to see him get bathed in light and disappear while this is going on those who stayed in town were met at the inn by a cloaked figure whose entire body is cloaked in darkness making it impossible to see if hes even human .  The figure asks questions about asmodeus in a rasping voice and everything he says starts with the phrase did you know ? And when he appears shadows spread around the room cloaking any form of light not extinguishing them and after an exchange he says did you know that I'm going to save you . And then vanishes

So when I let my players loose into my world I introduced multiple plot threads for them to follow as they fancied anyways they have just returned from the nevernever which they entered to escape the police who were chasing them cause they kidnapped a child. They are not murder hobos I swear that was a situation that got out of hand quick anyways they left the nevernever to find that they have been gone for 3 months and they still have the kid anyways skipping a lot of in between now they are in the swamps still have the kid mind you and they have stumbled upon a plot thread they forgot about . Which was people going missing in the Swamps anyways spoiler alert it's mutant alligators created by Father Tree again another long story and i need some help stating them .

I'm gming a Game that takes place in Louisiana and my players said they'd like to see voodoo involved in the campaign but I can't find specific rules for it so i was wondering how I should go about making a voodoo wizard .

I have never played Dresden files before I'm familiar with the books and am reading proven guilty before anyways I was considering dming for my group cause we all really want to play I have also never played fate before so on a scale of impossible to total nightmare how hard is this probably gonna be ?