Terrain and Environment for Fantasy Game Needed (3D)

We are currently looking for a 3D-Graphic Designer that makes the environment and the terrain of our game. Have a look at the attached file. (1) Environment: This is only a fast mockup/concept. We need this environment in 3D. (2) Terrain: Our battlefield consists of squares, as in chess. On the battlefield terrain is deployed. There are three different kinds of terrains: (a) lake (b) forest (c) mountains. All terrain items should be 96x96 pixels. Although the battlefield only consists of these 3 basis groups, we need 4 slight modifications of each terrain. Thus 3x4=12 terrain items. You can give me different offers, if you have a huge quality range. Let me know how long it takes. Regards, Amir P.S.: I have also opened another project for 3D character design. You might be interested in that, too.