Now you're getting somewhere! I very much so enjoy the depth, I think that helped alot. Especially with the cracks in the rock. The dark solid lines you originally had gave it a pasted on sort of feel. As far as the shrubs go, it looks to me as if they aren't really taking into consideration the rest of the lightsource. (maybe) In addition, they lack the detail the rest of the piece has. I'm going to do a quick edit on the shrubs, maybe the rocks. I'm having a hard time conveying what I mean...so stay tuned.


Okay, I kind of got carried away with my edit...I always do though.
The shrub on the left, I completely redid, with more of a leafy texture rather than bunches of circles. Whether or not it came out that great is another thing. The main point with that is to show a better way to handle leaves. I probably deviated from the original idea a little too much, and got a little too carried away with the shape of the leaves that I forgot to address the lighting aspect. So....nevermind that area too much. Gather what you can from it.
The shrub on the right, turned out better than the left. I pushed it further into the background since it was just asking to be pushed back. I kept your general shape and tried defining the leaves a bit better. Hopefully this one makes up for the less than great left shrub.
As far as the rocks go, I noticed that there was a lot of unnecessary dithering going on. Your colors mesh together pretty well and your dithering seemed to me, to be a lack of understanding of where exactly light should go. I'm not exactly an expert, but I feel that all that dithering worked against the piece.
What I did was solidify the lighting a bit more. This was done by filling out some dithered areas with solid colors and utilizing your highlights a bit better. This is where I did the most random pixeling so I can't say exactly what went on but hopefully you can check it out and know.
** Edit **
Alright, the shrubs before were crap...really I felt they would offer little if any intuition. So, I redid them. Since I've gone into editing my edits, I'll refrain from doing any more edits on this piece. XD
As PKmays has said, this piece has gone very far since the beginning.