I have noticed that in original pictures of the ROTJ helmets the tube stripes are applied with one big sticker. It is obvious to see and looks really cheap when there is any weathering as you can see the ends of the stickers.
There are two ways of applying tube stripes I have come across (TK4510). You can either use a transferable sticker where only the blue tube stripes are applied. The other method is masking templates where you tape the masking template to the tubes and paint over the template so only the blue tube stipes will be seen.
Are you allowed to use these two methods for ROTJ helmet?