The illustration of the CD Cover came to an end. In one of my previous blog entries, I mentioned that I was working on one of Tomas Dvorak's tracks called "The Castle" (Machinarium OST). However, while the back cover contains the full list of tracks, the illustration was specificly done to present the mood of "The Castle".
You can check more of Tomas Dvorak's work if you are interested, he is also known as "Floex". http://floex.cz/en/index.html
Also, the illustration is only done for the purposes of practice, the company name is just made up.