Bland. It is very bland.
For one, there's no panorama. Even if it's looking into chasm, there are certain techniques you could use to represent the chasm, not just use pitch black. If it's the night sky, get the space graphic or some graphic of the sky/moon, something.
The tree to the left of where you get off the bridge/stairs whatever slightly obscures the view.
There are one or two inconsistencies of the small shrubs that lie ON the cliff- the color of that is lighter than the cliff itself. Use it higher up.
Differentiate, use more shrubs and grasses and shit all over the place.
The little piece of land that is seperate from the main cliff is a bit square. I'm sure you know that nature and randomness works best for xp rtp, so make it a bit more, you know, random
I recommend most to use a bit more of the general tileset. The four/five shrubs in one tile tileset doens't work all that well- the one or two shrubs work best.