Space Bar
I decided that for my next personal project I would illustrate an environment, but I wasn't sure what type of environment I wanted to make, so I started out with some thumbnails.
From these thumbnails I got the idea to make a sort of futuristic dive bar. To help with perspective I made a model in Zbrush, and drew details on top of it.
I took a screenshot of my progress every once in a while and compiled the progress shots in a video.
The final illustration is below.