With the help of www.blenderguru.com, I studied how to create a simple window scene.
Final Rendering 2
It was really interesting how in this tutorial,
(the guy who created the tutorial) used numerous opaque textures, layered them together and made them transparent - which created the mist effect. From this study, I was able to understand you could be imaginative about how approach a problem and solve them.
Render Engine: Blender Render