What I did was I contacted the mods of the forum I was wanting a sticky thread for. I discussed the idea with them, bounced different ideas around, and came up with a result that everyone liked (though, mine is/was designed to help people, so the mods wanted it to work as much as I did), and then I created the thread.
It wasn't even stickied at first, but once the mods were sure I would update it quickly and easily, they had no qualms about having it stickied (though, with the understanding that if it wasn't updated with some pre-decided consistency, it might be unstickied).
I don't know if my thread was a special case, because of the nature of it, but I imagine that if you created a useful thread, the mods might be willing to sticky it (so, ask later). I'd think that since there is already a Feats thread and a Classes/Races thread, you'd want to make a different but similar thread.
EDIT: ... As I now see you've done. I recommend you organize it differently, but it looks good.
