construction on my back yard

I decided (and of course Roger approved) to get a contractor to bust up all the concrete in the back that surrounded a used to be pool and discard the concrete so we can plan some grass and prevent flooding of the back part of our house.  This is how it used to look.
And this is how it looks now.
Just dirt, lots of roots, rocks, and more dirt.  Had to divert the rainwater so it wouldn’t mud up.
So now starts a new project.  GRASS!  I told Roger to study up on grass, what kind, how to, etc, etc.  He’s not really an outside person, let alone the yard.  It does look bigger now.