Thanks a lot for the comments. I'd have liked to have more diversified grass on the front, perhaps mixing more populations; also, I wanted to put many more animals, like a pack of wildebeests far away, giraffas, maybe two lionesses hidden in the grass, but I did the project in about 3 hours, to relax, and at some point I decided that was it.
Once is rendered and posted, I rarely get back and work more on it (lazy guy).