For a more relaxing project, I painted an Imperial Bastion that I've had for years. I painted it dark grey, drybrushed with light grey, and painted the metal bits. Everything then got a custom wash (mostly Secret Weapon Concrete, mixed with a bit of Heavy Body Black and Dark Sepia). This provided a lighter wash to the metal than I usually use, but I think the dull finish is very appropriate for a building exterior.
The heavy bolters and floor of the parapet received the normal Heavy Body Black Wash, differentiating them from the silver on the Bastion walls, while the door got a drybrush and Sewer Water was to make it look a bit fancier.
Here's the Bastion as it will most often be fielded, filled up with Executioner Devastators.
