Alright, I'm pretty wet behind the ears, but I'm doing pretty good with my regional map. Well, I decided to take a little break, and am now starting on my kingdom's capital. I got my paper, my pencil, sat down, and...proceeded to tap my pencil against the side of my head as I stared at my paper just as blankly as it did to me.
I have NO idea what I'm doing, or where to start with my city!!

Here are some details:

1) It sits on the point of a peninsula that's jutting into a large lake.
2) It's the capital of my kingdom (like I pointed out above).
3) It was originally constructed as a fort, but was made more hospitable as more people sought shelter within its walls from marauding Desert Men.
4) It's where a lot of the more advanced soldiers (such as the Royal Guard) train, as well as a lot of casters learn.
5) The Mercenary Corps have their headquarters here. (It's VERY vital to my campaign)


So can someone help me? I'm kinda in a fix here with my group (they're getting a little impatient), and need some help ASAP!

Thanks in advance!