There are a few things that bother me (not really, but you might like to change it); the translucency makes the tree on the left very flat, I don't really like the color of the grass on the left, and I think you should add more groundcover there, the river is not really a river, it's wavy like terrain. Why not make it a real river? The rest would suit that. And you might as well leave the sky blank with only some cirrus.
Just my 2 cents, so don't feel obliged
