What's the black pipe with the 12-2 between panels?
Is there a strap on the riser of the service?
I usually install the wire for the ground rod
into the house, run down as far as I can go, and exit the house directly behind the riser. It makes for a slightly cleaner appearance, and keeps the #6 protected from damage.
It appears as though some of the romex runs aren't secured within 12" of the panels, but it's hard to tell.
After all that - nice work!