Before it's closure in April 2015, Fab Cafe had a wall painting above the bar that had a lot of reference to pop / geek culture icons. I thought that this could be a cool basis for my mockup, as I am into that kind of stuff, plus I miss Fab and so it can be with me in spirit through this design. (Though there is still one in Manchester).
I used the same pink colour they used on the walls for the background to give it the pre-existing old sci-fi feel. I envisioned this being a whole room rather than just one wall, so I did four designs. - When I drew them on paper they all connected but this was harder to line up digitally, but theoretically they would all blend together. I did small paintings of each element and brought them all together in photoshop to create a more final design. There are lots of other elements and references I could have added but I didn't want to make the images too overpowered and busy!
Here I have made a bit of a mockup by editing my designs onto the walls of Fab Cafe Manchester. (My editing skills are not the greatest but I think this gets the point across)