I like the third image. It looks like the planet Tatooine from Star Wars

CGArena Free High Quality References Library

http://www.cgarena.com/freetextures/panoramic/panormas/sorted/date_taken/asc/

20+ Free Textures for your Delight

http://webdesignledger.com/freebies/20-free-textures-for-your-delight

I like the colors and composition but no the bump texture of the canvas. I think it is too exagerated...

7 Hi-res Concrete Textures
http://www.deviantart.com/download/143983631/Hi_Res_Concrete_Texture_Pack_by_Lilshadow.zip

5 Concrete Textures
http://www.pixeden.com/category/40?download=32

5 Fantastically Free High Res Brown Paper Textures
http://www.blog.spoongraphics.co.uk/freebies/5-fantastically-high-res-brown-paper-textures

This is the design of a bank that I found surfing the Internet.
In the coming days I will show you the steps I have been following for modeling it

Banco 01 por artysmedia, en Flickr

Elementos decorativos 08

Only Google SketchUp

Elementos decorativos 08 por artysmedia, en Flickr

LSE Building 02

Only Google SketchUp

LSE Building 02 por artysmedia, en Flickr

Elementos decorativos 07

Only Google SketchUp

Elementos decorativos 07 por artysmedia, en Flickr

Old Paper Texture Pack
http://nevermoregraphix.deviantart.com/art/Old-Paper-Texture-Pack-115615944

Paper Textures 01
http://nighty-stock.deviantart.com/art/Paper-Textures-01-11194952

Natural Paper Texture Pack
http://cloaks.deviantart.com/art/Natural-Paper-Texture-Pack-78124632