You've been tasked to draw up a code presentation style where there currently is none. Good luck! You can be sure that everyone will have an opinion on what the style should contain and that no one will be completely satisfied with the end result. Techies are helpful like that.
Creating a coding standard is a delicate task, and it should be approached tactfully but firmly. Why? Dumping edicts upon a group of programmers will neither make you nor your standard popular. But if you don't emphasize how important it is, programmers will not embrace it and will continue coding in their own peculiar ways.
The difficulty of this task depends on the people in the team:
How many programmers there are
How they code as individuals
How similar ...