Looks great. Keep up the good work. Not to sure if you need all that crap added the guys above are talking about. It is hard to tell the darkness of a map by a screen shot.
Just keep on track until the beta comes out. Then listen to comments of what you should do after that. If people even comment on or play the map. You always get those guys who complain after you release the final. Saying "I dont like this. You should fix it." "Oh I dont play betas. This needs fixed" LOL.
Bottom line get your working project out. Then finish with decorations and glitch fixes as people comment on them.
Look forward to giving it a whirl.