Regarding the doors and as an inspiration, you can have a look on this site...

It displays several example of doors with fieldstone:
-Tür 1 (2 Stück)
-Tür 2 (2 Stück)
-Keramik-Tür 1 (Vorder- und Rückseite)
-Keramik-Tür 2 (Vorder- und Rückseite)
-Keramik-Tür 3 (Vorder- und Rückseite)

On each page, you can click on the link "nächstes Bild" situated on the left. It will display other pictures of the doors painted...

Thanks,

Deuc