It looks very nice, but I also think the lighting needs something. I think the red and blue look good actually, its the white/yellow lighting which bugs me. It looks very washed out and bland compared to the strength of the red and blue.
I'd consider making it a bit of a warmer yellow colour perhaps, or at least some random experimentation with it to see what happens 
MrBaracuda: Yeah good point, I'll switch for some 'cleaner' grass. I'm can probably just use an overlay for dead leaves if there are not suitable blend textures.
atrocity: that little railed area was gonna be a sniping balcony I suppose, but I've yet to map out any interior hence its got no doorway leading inside yet. So either way it'll be fixed or it'll be deleted 
Pillar need fixing up anyway because the vertexes are a little off so I'll fix them up too. I know what you mean about the stairs, I was switching them round a lot whilst I was building them and they always looked weird however I set them up for some reason. I might switch them so they jut outwards instead of carving inwards, if you see what I mean.
Quote from e-freakDo you mind showing some screenshots of details?
Sure. Its still nearly all basic brush detail. Have yet to add many models and stuff. This will probably be quite an open level with a couple more buildings like this, so it won't be getting a whole lot more fine detail - just enough to break up the plainer walls, etc.
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Quote from DarkDid you do the models?
No, all models and textures are stock HL2/CSS, apart from them trees, which aren't mine 
Thanks for the comments!
Hey everyone, first post
Been mapping with Source for a couple of years. This is my latest which I started a couple of days ago. I used NY Public library as a basic template for the building design.
A few pics to show how I progressed (click for big) -
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[Blocked Image: http://img.photobucket.com/albums/v59/willyfogg/th_hall040000.jpg]
