Why are you showing the end of the map? Also, the sky you use and those rays of light don't make sense. If the sun is right there, why are the rays coming from above the sun? And furthermore, why is it raining?
It looks like you would just fall down for ever if you go to the other side of the way where illidan is. And some of the trees looks like there floating, cause the stem are barely touching the ground. Use ctrl + pagedown / ctrl + pageup to lower / higher the doodads. As said before also remove rays of light cause the sun is in the middle of the background and not on top of it.
I like the train and I think than was made pretty well for a first terrain. However the light effects don't make sense.Try next time to use custom light effect doodads from UTM istead of using blizzard weather, that will make it look much better. And try to have more distance in your landscape. Keep terraining, you got it, just practise. : )