I've done the first stage of the clothes texturing. No lighting on this one as I haven't done any spec maps yet.
This part was done with different tools to the head. There was too much shading on the clothes to use projections. Instead I made a couple of brushes from the source photos for the shirt and trousers and used them as stamps with random offsets and rotation. That's a nice quick way to cover a surface with textured detail. Flatten to UV space was handy for making sure the hidden bits like armpits got covered.
Then there's an Overlay layer for the cavities and wear on raised edges. That was done with the Drybrush tool. Particularly good for jeans.
And then there's an Ambient Occlusion layer Multiplied on top.