I did think of this as an idea but it doesn't appear that it would work as it is an adhesive backing. I may be wrong on this but i didn't think it would work. It's a slag of a job if you're a numpty like me!
I've got all the faith in the world that you will! Can you come down and fit it for me while you're at it !
That's how I did mine - bit of soapy water and once you have in the right place use an old credit card with a blunt edge to push the water from under the sticker.
I would use the new sticker and make a template with it, then take this cut out and place it on the screen with a bit of blue tack..... Then as said just "draw" round the template .... Whip it off and put the actual sticker in the area marked. Not sure i would use a pencil, maybe a non perm felt pen, at least test it on an old screen first.
I fitted mine whilst screen on bike.. As the backing splits down the middle I lined it up first then used masking tape to hold one side perfectly in place. Then just lifted up the opposite side remove half the backing then smooth out.. Then remove the masking tape , ease up the other side then peel of remaining backing whilst smoothing out. I did find a company that made them on the net, ??? Designs rings a bell I,ll try and find the link. I bought one from them and it was as good as Hondas..