I don't mean by any means to be rude in saying this, but it went from very bad to horrible. I'm not sure what sort of a theme you're going for here. Were the "wooden" base to be buried underwater, the wood would not have such a clean and sharp look and gloss to it. Your wood still looks like metal. A simple shader swap can fix that. Also, you NEED custom bumps on your wood. Wood, without bumps, looks like little more than a smoothe tabletop with no bump mapping.
I suggest also that you skin everything on the tower. There are huge areas there that are left unskinned. There is no point in skinning a map 50% and releasing it just because you get excited about what you've done. Take the time and finish the project.
Also, PLEASE DO NOT inject textures with seams! There is nothign more damaging to a skin than textures with seams (or severely tiled textures). I have made a tutorial a while back to fix the seams. USE IT. It will help you out in so many ways. When you get that down, you can make any texture into a usable, seamless texture for your skins.
The Tutorial:
http://forums.halomods.com/viewtopic.php?t=45202
Yes, I wrote it, but just becaue I was tired of seeing seams in skins. I'm not trying to "float my boat" or try to make myself look like I have any room to talk or anything. I'm just trying to help you out.
In all, though, thanks for skinning. I appreciate the time and effort you've put into this skin and look forward to more of your work in the future. We all get better the more we do it, so keep it up.