Lovely scene. I like the POV, unusual. Works really well.

I like the general composition of this image. The only thing I would change, compositionally speaking, would be to move the left sheep a bit, so that the flower is not so much in front of its head. Regarding the grass, I noticed that you tend to use this kind of grass a lot. This grass, because each unit is so big, only works well in flat terrains. If you have a slope, like in this image, the grass tends to act a bit strange, like in layers. One recommendation to try to eliminate a bit this aspect, would be to define the ecosystem in a slightly different way: in the "Scaling & Orientation" tab of the ecosystem, slider "direction from surface", make the grass more perpendicular to the ground. The default is 20% vertical, but that's too vertical for a slope as this one. Try with 80% in this slider, or even higher. Alternatively, you could buy some grass which doesn't come in such big units as this one. I like the place and mood you created here, calm and serene.