[@Omni5876] If you aren't sure? Ask. That would be the best advice I can give. As for how much freedom you have with NPCs and the world, you'd be generally alright but the one thing I would ask a GM would that if you do need something more than a generic conversation with a NPC or need a description of an area just shoot me a @ or a PM and we can collaborate on it. Just so people aren't Roleplaying with themselves. I'm usually on RPG every day and even if I don't reply I have seen what questions people ask. I may just be thinking hard on it is all. After all, I'd rather give a thorough answer than a half-baked one.