[quote=@HeySeuss]- How to critique a character sheet and suggest changes.
- How to deal with someone that seems to be 'taking over' the plot.[/quote]

Yes please, thank you please.

Also maybe guides on how to deal with someone (as a GM) who is not 'taking over' the plot, but in other ways just being 'bad' (for want of a better word). Eg: ignoring RP canon, writing something apparently irrelevant to the RP itself, or writing in a section where they basically aren't qualified for? On a similar note, how to reject a character/player from your game based on any of the above things.

I've probably come across as a total douche here, but I know I've had experience of people with major SPaG problems in Advanced or writing for a genre that the RP just kind of isn't, such that their posts seem out of place and a bit... 'wrong'.