The terrain would look a whole lot better with a better grass texture.. this one currently.. it's too large or something.. i mean, it's hard to explain.. but it looks like the grass isnt flat on the ground, but not in a good way.. like it doesnt fit.. it seems too big in relation to everything else..try to find some texture that shows a bit oif the ground through the grass.. like patches.. this would make it seem more like ground, not some wierd green moss..