This is an UNOFFICAL edit criteria, it does not have to be followed, it's just my opinion!
Pages should start with its Survival Difficulty, ranging from 0, to 5, though some pages can go beyond the limits or have even special types with special properties.
Pages should also have images which describe the level, these image can be made in programs such as blender, or you can even find one on google images, if you can't find a good image, try drawing one on paper and sending a photo, claiming it's "a wander's drawing of the level" or something along those lines, if you can't do it on paper, doing it on something like MS Paint works fine too.
Make sure to describe the level with detail, and give good writing, use good adjectives, maybe even use The Taurus if you are that crazy about good writing.
List the entities in the level aswell.
Make sure you also add entrances and exits on the bottom, ways to get into the level, and ways to get out of the level, make them up, be creative.
Make sure too label any important text with an italic or bold string of text to specify it, also make sure to put embedded Page links when mentioning things which have their own page, simply type in [[ in visual editing and a prompt will show, type in the name of the desired page and click on it, and it should be working.
I hope this helps with making good pages on the wiki.