For making the cockpit artwork (lettering at the different
controls) I used very simple means:
Then I used a sheet of "Labels for Wordprocessors" (a one-piece A4 sheet label with peel-off back) and printed the textboxes on that sheet. I used simple black and white, but if you have a color printer, the labels can be made more fancy. To make the labels stronger, I taped transparent tape over the printed labels and then cut each label out with a sharp knife.
An example of my cockpit labels (Word) can be found here.