The BrikWars wiki is created and maintained by members of the BrikWars Forums. In order to have editor access on the wiki, you must be a member of the forums in good standing, and be a member of the BrikThulhumanati usergroup.
To use specific formatting templates, it's best to see how they're used on existing pages, copy and paste them, and modify as necessary.
Images need to be uploaded on the Upload File page. There is no way to incorporate external images.
For general help on formatting and editing pages, see http://www.mediawiki.org/wiki/Help:Contents.