Well I've recently started working on my first arena map. Its basically a small section of a city for everyone to blow each other away in. It features pretty much all of the guns from model pack 9+10.
http://i94.photobucket.com/albums/l106/twitchtweak/screenshots/tower-basement.jpg
This is the basement of a communication tower. If you take the staitcase all the way up you can see half of the map, and you get a trusty barret.
http://i94.photobucket.com/albums/l106/twitchtweak/screenshots/alley.jpg
This is an alley outside of the communication tower.
http://i94.photobucket.com/albums/l106/twitchtweak/screenshots/bar.jpg
The building next to the comm. tower is a small tavern.
http://i94.photobucket.com/albums/l106/twitchtweak/screenshots/garage.jpg
Next to the tavern is a mechanic shop.
http://i94.photobucket.com/albums/l106/twitchtweak/screenshots/tower-top.jpg
Here's a pic at the top of the comm. tower. You cant see but there is a large sat. dish on the top of the tower. Across the street is an apartment complex which is still being worked on...
I'll post more pics as I get further into it..