Secondly, whenever I get ready to start decaling, I scan the sheet and put the scan on my computer. If for any reason I mess up a decal, I may be able to make an inkjet copy using inkjet decal paper. It is good insurance. Sometimes I have had a decal fold back upon itself and be ruined- in other cases I have just plain lost a decal. Being able to make a substitute has sure saved a few models.