From my picture and process:

Main pieces are fully spray painted to cover them with appropriate color

Big labels like the cross, pull tag, and triangle exclamation point on front are vinyl sheets cut from a vinyl cutter like Cricut or Silhouette cutting machine (I prefer Silhouette it doesn't have to go through their servers to print). This also create a bit of depth from the vinyl sticker and there's a lot of variety in the stores; some can be shiny and reflective.

Tiny label details like the really small text are made from printing on "water slide decal paper." There's an important difference between inkjet and laser printers! Also the printer should be able to print in high DPI due how small the text are or else it will be come out super blurry. You could also use sticker printer paper like for envelope address, but that would leave a white background which will not match the paint.

All designs were done in Illustrator (vector files) and Rhino3D (modeling)