You came very close to another dream job of mine. I'd love to make signs/business marketing items on paper for a living, but I want to truly create them before doing the printing.
Well most of it is pretty simple, alot of the signs I print out are pre-made, I just have to print them out and organize them by section, and then put them where they go. The ones that I do myself, I just scan the item and use the product of the info on my handheld device to type out simple signs, like product name, what kind of deal it is, original cost compared to lowered cost, ect. Its nothing too complicated : p
Its mostly just how much we get, we get ALOT of signage, especially during the holidays (I work in a fairly large store). As well as price changes and everything else. And I have to gather together all the paperwork, figure out what goes best where, making sure everything is visible and shop-able, that every product has enough tickets, ect ect. Im told that I will be allowed to pick a helper for December, though. So that will make it easier Im sure : p
I wouldnt mind creating my own signs, like you said, but I dont feel I have the experience to do such a thing. Like I can make a BASIC sign, but like an ad made to catch the attention of the shopper, I have no idea if I could do such a thing, haha.