[CupcakeDolly]

Nah, you don't need it. Descriptions are good enough. I just like to make mine look pretty. =3

And yeah, generally you'd make separate posts for each character. NPC's you can do however you want - usually I would just have their text in a different color in the same post as my character's, or you can have them in a separate post altogether. If you wanted to post OOC and be all moddy you could just do it in parenthesis in any of your posts.

You get to make up the rules, so whatever works for you. =P