3D Assets for a graveyard scene

For any good 3D environment, its essential to have a good amount of assets.

I cant afford to outsource modelling or buy third party meshes, therefore I am creating some assets for now. Here are some of the already finished things for an upcoming cemetery scene I am planning to create. 
At the moment I am testing with physically based rendering materials.

This is a render of a small grave of an unknown soldier who fell during the war.

Reference that was used is from the german war cemetery “La Cambe”, located in Normandy, France.

More smaller models are coming soon I guess.

Update:

Another variant of a gravestone:

a larger tombstone:

..and a grave array:

All Models, Skins and Renders are created by myself.

Feel free to leave a comment!