I'd try using mainly grass tufts, with a bit of a lowered Z scale. The bright green HT grasses don't fit. Also.. Azshara statue is a different one - the one with the lady thing. I've never liked those trees, I think you could use better ones. The light should fully encompass the statue, the half-archway looks a bit out of place: try tinting it according to the area. The bridge, IMO, should be a natural one, or the wooden plank one with a bit of green in the tint. The sky ATM is fine, but could be worked on. Try using some different rocks though, the sunken ruins green variations are wonderful for these types of terrains.
As for tiling, I'd use more dirty grass and lumpy grass, with some leaves around the trees and grass around less overgrown areas.
And Oziris, er, yeah, underwater is a massive barren wasteland... cough.