Beware of the ghost well!
Maps
Workflow:
First off I changed around the UV's a bit. I made some part share UV space so other parts could have some extra space. It was also nice to know what is what. And with someone elses UV work just goes slower.
Then I rendered out an AO map. What appeared to be suprisingly simple. There is a link to a tutorial about it posted early in this thread. I've put the AO render on top of everything and switched it on and off while working.
The diffuse was made by taking photo's from CGtextures and changing them around. Once again I added a bit of detail by bleding in some moss.
After the diffuse was done I took a rock texture and lay it on top of everything. Then I gave it a very opacity. This gave the diffuse a litte extra something that looks cool.
The spec was made by just desurating the diffuse and messing with the contrast. I simply used the marqee selection to select different parts and adjusted the contast and brightness on them
Because time was running out I just took the diffuse without AO layer through a Xnormal fliter to get the Normal map.