LOL! no sorcery, and I
was a bit peckish...
The paper texture is one I made for the challenge, and is available in my parchments album (link below). There are 3 versions of the same texture. I think its version 'c' - they grey one anyway. The rock texture is one of the cliff textures from Textures.com, turned into a GIMP pattern fill and used as an overlay, the sandy texture in the valleys is one I made ages ago. That's in my textures album. I think its called red desert - probably the first I ever uploaded, so it will be right at the back of the album by now.
Its all done by carefully playing with the hue, saturation and lightness (and a bit of contrast) to make them meld together as one, and then painting them visible (or invisible) using layer masks.
The shading (pretty rough at the moment) is 2 layers of overlay with black painted on them, and the shadow is another layer with black painted on it, but with multiply mode instead, which gives it that colder 'I am a shadow' feel.
The grass textures are both mine, and I think they are also both available in my textures album. Again there is a layer of solid grass for each texture, and the visibility is painted in and out on a layer mask. Its only there so I could mess with the colours to make everything look right
So the only texture I can't give you is the rock texture, but you can register an account with
Textures.com and get it quite easily for yourself if you like the look of it