The illustration was done using a photograph I took of a can of tomato soup. It is paired with some Helvetica Black I mapped around a (3-D) cylinder in Illustrator and then traced by hand (for the "Bureau Shapes") and hand-drawn icon noodle shapes for the fedora, badge & gun. Text around the outside is dummy text but layout is the same as in the project.
Close up of the finished product. In the original Illustrator file I tried hard to make the text on the can look sketchy, but in the finished product it ends up with a more refined smooth look.
Another close up. Note the trapping I used to make sure all the colors overlap with no white showing. It's much more noticeable in this picture than it is with the final product in your hands.