Day 4 of Wiki Creation: The Stumbling Blocks to End All Stumbling Blocks

wrong-side-of-a-war.wikia.com if you wanted to take a gander at what greatness looks like before it has its morning coffee. 8 pages and counting!
Four days into this massive undertaking (boy, did i underestimate it), I've realized that I have a very, very basic problem.

How do I format my pages?
I have a MS Paint doc open with three 'Contents' boxes--Vulcans from the Star Trek wiki, Wookies from the Star Wars wiki, and Humans from the Andromeda wiki.

I feel it relevant to note that Memory Alpha (Star Trek) doesn't seem to feel a need to be consistent with its Tables of Contents, nor does the Andromeda wiki (which can't even decide between 'physical characteristics' and 'physiology') but the Wookiepedia does. I'd like to be consistent, it feels...better to me, but ordering them seems to be a task in and of itself.

On the one hand, I have to figure out who's reading this. Are they there to figure out if Imbarians have two hearts or one? Would they be more likely to be interested in the Nikian subwar during the initial conquest of the galaxy? Are they more perplexed by the biology of the pseudoimmortals, or the morality of the gods? Does it matter? Does history come first, because it sets the tone for the stories they read in my book, or should appearance come first, so they understand what the characters look like?
Does the size of the canon impact the priority of history over appearance? Does it matter who the race is? The Thorans define themselves first by their military might, then by their architectural and industrial achievements; the Chouk'mir aren't too big on written histories, but they love talking about that time their father's cousin's nephew's brother's former roommate fell out of their bedroom window and into the waiting mouth of the predators bigger than they were, and that's why they build their houses in trees in the first place.

Star Trek, Andromeda, and Star Wars all have massive histories, dozens of books and series and movies and episodes (apply to each series as relevant) written about them; I've got a third of a book, with relatively little grander backstory. Need I invent the history of Yevrun, so the part in the Constellar Imperium:first conquest about not being able or willing to conquer that planet makes sense? Or will a future reader tolerate a general lack of information, given that there's not much to be had in the first place?

There's so much more here to do than I was expecting. If I manage this, someday I'll have an achievement equal to writing the book itself; if I don't, it'll just be another poorly run wikia hosted by FANDOM. God be with me; I need the help.