As the map stands now, I wouldn't put it up for download. It's far from being a complete and enjoyable map.
Things are too basic, too blocky. Expand the map a bit, use some more polys to make routes smoother while adding some relief, places to duck down and hide. While you're at it, add a few more rooms or routes..there's nowhere to go but into the large room up top, and that's not very good for DM play (which I assume this map is?) Try to make things more...circular, like Jungle or other DM maps in the game.
Experiment with sceneries. Make the lights more transparent, for example. Personally, I think the car and that other massive scenery you have look very bad.
Shading is key..it's all grey and monochromatic now. Adding more polys will help make the shading easier. Try to build the larger shapes out of sets of smaller groups of polys.
