The new pov and scales of the trees give a nice sense of build-up and depth.
I think what this image, and perhaps the majority of your work so far needs is some extra surfacing.
Try to add a couple of surfacelayers like a slight desaturated dark brown as base with lighter and more saturated shades on top of it.
Each with a little bit more slope restriction than the previous one for example. Then add some sand/dirt-like layers on flatter slopes and then add grass-colors.
Also you could add gritty stones at quite high densities. For example 0.1 scale stones @ density >0.5.
This adds more interest.
Then you can start adding vegetation.
In this image I think the scales of the trees are quite spot on.
However, the grasses are way to big. I'd reduce them by ~5x.
Another suggestion I would like to make when exploring this magnificent piece of software is to try one thing at a time.
Even though I gave you a couple of suggestions I would try to focus on one aspect in particular.
When that's completely satisfactory then continue with the next element.
This will really result in better work, but probably even more important, better understanding.
If you need help with any of the suggestions, then just ask.
Cheers,
Martin
