im fairly new to 3dsmax (6 months or so) so please excuse my noob question 
i've made a hill & landscape scene and added the relevant textures that are included with 3dsmax. anyway, when i render it, it all comes out flat like below:
the background is a plane with the map image added to it, same with the grass. however, the grass plane is pointing diagonally downwards like a hill, yet it still comes out like that.
i have tried adding lights, and moved the vertices up and down but it makes no difference to the final render. any ideas?

i've made a hill & landscape scene and added the relevant textures that are included with 3dsmax. anyway, when i render it, it all comes out flat like below:

the background is a plane with the map image added to it, same with the grass. however, the grass plane is pointing diagonally downwards like a hill, yet it still comes out like that.
i have tried adding lights, and moved the vertices up and down but it makes no difference to the final render. any ideas?