Upon revisiting the film out of interest, it came to my attention that none of the characters were eating a burger (I must have got mixed up with the start of the film). Instead, because it is a coffee shop, I thought I would develop an icon for a cup of coffee - nice and simple.
Also, the gun that I had before had different weights, it didn't have consistency with the other icons. To resolve this, I tweaked the shape of the trigger and increased the weight of the lighter strokes to match the entire icon. It looks even more simplified than before, which is good.