i did what's posted above.
if you put it all on in 1 piece... it will curve. the decal is straight, the glass is curved. so i cut the letters like above and did them all seperatly. i removed the stock decals and put new ones on last year - so i had my stock decals to use as a guide.
it really doesn't take any longer to cut them and do them seperatly as opposed to doing them all at once.
search for my post... i posted some install notes around here somewhere before. bascially get the glass CLEAN (wipe it down with alcohol), spray the decal and glass, get the decals in place and start pressing them down.