Ad grass, trees, bushes, flowers to a rendering. And render it.

Dear Freelancer I have a 3D Rendering, and the model of course. That I need to finish. Shouldn't take long. See the attached image: [login to view URL] Trees need to be attached exactly where I want them to be. I will give instructions. All I need to do is to ad grass, trees, bushes, flowers etc. You need to be able to ad the exact type of trees that we want (it need to be the kind of trees that grow in this area) and it is very important that the gras and the landscape is realistic. Not that it looks fake. I have attached in this dropbox a sample of grass and trees etc of the quality we use: [login to view URL] Then do a medium res rendering for approval. When its approved I need it render in High Res for Print. Its going to be printed on a big 6m wide banner. PS! (There might be some minor other changes to the rendering after the approval. After we see it with landscape we will know if its perfect or not.