In the end, it was quite simple. At least after days of research.How do you achieve the comic effect?
Paper was out of the question because it swells with moisture. A single printed film per tube would have caused wrinkles with my talent. Individual stickers are too thick if you have to overlap them, which looks bad and increases the risk of paint chipping. So all that's left was water-slide film like you would use in model making. It is thin enough, printable with a laser printer and relatively easy to apply. So pre-treat the frame, prime it and paint it white, then select the pictures, print them, cut them, stick them on and finally apply 2K clear varnish over everything. Et voila you have a comic bike.