First you may wish to remove colors aka turn the picture into black and white. That was necessary on this particular picture in order to get it toned all brown.
Next phase is to duplicate the layer. Then change the layer mode for 'Multiply'. Now we want some black 'Outlines'. On some software the 'Outline' tool gives you white outlines. Therefore you may have to 'Invert' the layer.
Finally duplicate the base layer again to get one more layer into middle. Then just change this layer mode into 'Divide', and there you have it. Finally you may want combine all layers and tint the image into brown (or what ever you like). I also recommend running something like 'Unsharp mask' to finalize the picture.