Boy that was a short first IC. It felt longer when I was writing it. 

Anyway, I had an image of the city in my mind but I wanted to try and keep specifics on the down-low to allow for some freedom when the characters walk through the city.

So now I'll mention post lengths- I don't enforce any, though I will say I'm not a fan of one-liners or one-paragraph posts. Its situational, though; obviously, in a combat situation it can be pretty tough to write more than a paragraph or two. So I don't enforce any post lengths, but try your best to keep it over a paragraph. 

Also, remember to put the location of your character at the start of the post in italics, like so

[i]Underdeep- Mustering Hall[/i]

That makes it a bit easier to keep track of where everyone is. For the first posts, just make sure it ends with your character in the Mustering Hall. How you get there is up to you.