Looks fantastic!!!
The brown pixels in the background tell me this is an underground scene...... The green pixels in the foreground (as opposed to a more realistic rocky colour) work well as they stand out from the background without looking ugly or monotonous....
Jibb
Agree with all this, i think what you should do is add a detail layer to all walkable surfaces like how you did with the grass, you could add stones atop the rock layer, hope you get what i mean, other than that, looks great
