1)Do Not God Mod, AKA Auto. God-modding is basically being impenetrable and indestructible in every possible way. Don't do this, even if you are roleplaying a God of some sort. Remember: if your character gets killed in a particular storyline, you do not have to declare early retirement and kill off your character completely. Also, autoing is when you try to hit someone and they somehow "always hit without missing." This can also be called character controlling, controlling other characters, etc. It's insulting to the other roleplayer if you suddenly -throw a tomahawk at them with no chance of escaping- because it's pointless.
2) If You are Going to do Sex Scenes, try to be be discreet about it. Nobody likes to be pushed out of a roleplay because of the posts stacked on posts of someone giving head in an incredibly descriptive and awkwardly written style. Make your own forum if you have to, but keep those forums few if it comes down to that. Always post 18+ as the title and please ask the forum creator for permission before adding any sexual content to any forum.