The standard setup for a monster page can be found towards the end of the page at
Help:editing. For a monster page to be considered to be "of substance", it should contain at least as much as the very bare minimum amount of information.
The structure of a monster page is intended to contain as much data and as little formatting as possible, due to the number of pages there will be. This is so that if anyone isn't happy with the basic page layout I created, they can make changes to the template used and alter every monster page effectively.