Suggestions:
-The tree you used in the island blends well and looks good so how about mind also changing those Lordaeron trees because HQ Island tree with those Lordaeron just doesnt blend when mixed.
-At some point it is quite empty so I suggest fill it up with more decors.
But I also did some little changes in the terrain such as:
-Adding little decors at it. I just guessed randomly on what to put so if you dont like it, dont hesitate to ask what to change.
BTW, here is the changed map below.