Im taking Kasperg up on his sugustion and makeing a thread to discuss to a degree, what you are mapping now. and to make sure this doesn't devolve into spam. I will request that you add screens, talk about your map, give us some detail. tell us what the map is about, what theme it is.
Ill start by saying that im working on my part of Half-life: Hostage Situation, you can see the thread for that.
But, when Mapping for that gets a little dull, I put a bit of time into my first DM map. a little fort on a beach, very yellowie