Well, I think the terrain looks great njeneb!
I wouldn't pass this one down but give it some more time.
Perhaps break up the green grass with some dry grass and let the rock/sand surface show through more. Maybe have only a small population of bushes in one place.
I wouldn't use a pinkish sky with red trees (clash) but, I know, it's a matter of taste. If it looks good to you go for it