The screenshot promised a lot, but actually I´m disappointed.
There are a lot of nice details and the overall appereance looks quite good. But unfortunately there is one very weak point:
The Layout:
It´s too simple, probably fun on 1vs1 matches, but it doesn´t work for CTF! One step around the corner and you just enter the enemy-base? The map is too smal, imho.
I suggest you add two more rooms at the other side of the rail-track. Actually there are two blank rooms right there, already. (leftovers?) Maybe you forgot to 'solid' these places. I would build up another area there, connecting it to the already existing by three ways...
Enlarge the map, to get more distance between the bases and I´m sure the map would be fun on (T)OSOK/(T)DM.
Keep it up!