Build a Game World / Map

We are looking for a desinger to build a game world for a new MMORPG. The world has to be built in HeroEngine from scratch. Map should be an island around 1000km x 1000km. Bidder must be familar with using HeroEngine. Please send relevant examples ONLY!. What Need to be in the wolrd (No Buildings, only landscape). --- Trees, Grass, Plants, Flowers, etc. --- Roadways (Dirt, Paved, Tiles) --- Mountains. Rocks --- Rivers Use game such as World of Warcraft, or Jade Dynasty as reference. Additional work will be available in the future.