Theuns, it's not really that difficult - all you need is some clear decal paper, Microscale Decal Liquid, a colour inkjet and some little knowledge of graphic design. and quite some patience
Commercial aircraft not my bag baby but cannot deny that that is a beautiful build. Great work! And for those who are interested a good site for logos etc is a
Site called brands of the world, lots of eps. Or ai. Files and if you can't use these send them to me and I'll convert them