Thanks for the generous comments everyone.
arran, yes, the ground does look flat. So far I havn't done anything special yet, like add bumps, specularity, etc. Just, texture mapping, applying the textures and rendering with one directional light with ray trace shadows. My render time right now is only about 5 minutes or less I think.
Once I finish applying the textures, I will work on lighting, shadows, bumps, etc (if I get time, hehe).
Don't be satisfied with what you can do but rather strive to do the things you can't do!