Oil Painting "Desert Tapestry"

I was thinking of working on this more today, but after looking at it all week, I have decided it's done. The grass in the foreground is what was in question, but I think it looks alright the way it is. What I would have done is put in more detail, but I am afraid that might have ruined it. first of all I am trying to get away from putting in so much detail and second I think it wouldn't help me accomplished what I set out to do, which is to give the viewer the feeling of the extreme depth of this place. I actually think it turned out kind of flat, so I think I need to study other artists' paintings some more