@Spud
Does the sample post have to be from an previous RP, or can it be one made on the spot?
Up to you, but honestly, theres no need to write something specifically for a sample post, I just like to see that people can post a sizable piece of well written text. Its to ensure someone who is say, free level, or unable to use spellcheck (for whatever reasons) doesn't wind up in an rp they were unsuitable for (High-cas to advanced), the specific quirks of your writing style aren't being graded or assessed, its just to see that players can make the general post-quota of an advanced level rp! I hope this clears it up.
Basically, you can write something specific if you like but its really not essential, the sample post is not for your character specifically, so you can use any character or previous rps!