Some of the textures look a bit... wierd. Mostly wood since it's not tiling.
And I don't really understand where you got some textures from, but that could be because it's not finished yet.
However, I really like the idea of using bandages for diamond.
Please post your feedback!
http://img842.imageshack.us/img842/3352/terrainr.png
V0.1.01: http://img690.imageshack.us/img690/6209/terrains.png
Changed the wood a bit.
Would you mind telling me the ones that you don't really like? I'll change most of the textures by the time it's done, but it might help me a bit.