Ugh, too Photoshop-filtery! It's nice that there is a bit of texture to the environment, but the uniformity and flatness of it just ruins the sense of depth and perspective.
I do like what you've done with the rocks, which now seem more like rounded, solid objects than cardboard cutouts. The one on the right could use a bit more work along the same lines, but nice progress. And the plank bridge is also very nice.
If we go back to the previous version for most other aspects, I would point to the cliff face as being most in need of work. First, stay away from the soft brush for shadows there, it gives it a gentle, smooth, wavy appearance - exactly the opposite of what you want. Second, know your light source. According to the foreground rocks, the sun is to the right, so shadows should fall on surfaces that don't face that way. Currently the deepest shadow is on the bit that should get the most direct sunlight. Third, like 2ma2 shows, figure out what the shape of that cliff face is in more detail. It might be useful to split it into a few different planes and add some clear outcroppings, then sketch how the cracks would go. Also, the whole cliff wouldn't face us head-on; if we see it at an angle it adds depth and makes it look more realistic (as in the samples 2ma2posted, again).
For the grass, I think your initial technique was fine, but again you should be more deliberate in how you place light and dark areas depending on the light. You can get the sense of grass blades just by using your brush in a consistent direction.