You are allowed two characters, after you have proved you are active on your first; so once it gets started, and you'd like to switch between the two, that would be fine.
As for rule five;
We do not allow the use of -'s or *'s in posts. It would only be emphasis.
"Cloud slowly eased to the stone beneath him, his bones shaking. After the fight with Malevolent, as small as the little hyena had seemed, he was (-sure-/*sure*) he wasn't going to be getting up for a while."
Though, for emphasis I usually just use /'s. But to each their own. It's basically a paragraph roleplay. We have members that go on and on, and some that stop after two or three posts. All depends on the mood and plot points.