Thanks Cap, but im confused as to what "2 thickness transfer sheet" is?
i was about to try sticking using spray mount, the film inculding the backing to wallpaper lining paper, after cutting you should be able to peel the film from the stuck backing..

if i get you correctly the film is stuck without the backing to this "transfer sheet", this dosn't damage the film or ruin the heat glue?

If you want to move this off topic subject to another section then please do so Cap