Just played this with you in a netgame, if I recall correctly...
Not a bad map, just a few things:
1. The GFZROCK texture you have doesn't really match the brown rock flooring you have on your level. I would pick either having both walls and floor as GFZROCK, or your other texture, but not a mix of the two.
2. Its kinda small. If you're expecting a standard netgame size (6-8 players) to be able to fight here comfortably, it needs to be a bit bigger. This map looks like it was built with the 3-5 player range in mind, which isn't necessarily wrong, but if you want bigger games to use this map...
3. Your image link is broken. :|
I look forward to your future submissions.