I have a set or two of the stencils from various companies, and have always been hesitant about using them, as I'm not sure how they conform over curved hoods, etc.
I can see taping the edges, but doesn't the center points of the stars raise?
Maybe a little rubber cement on the back?
Character is what you do when no one is looking.
Few things are harder to put up with than a good example.- Mark Twain
Make yourself an honest man, and then you may be sure that there is one less scoundrel in the world.--Thomas Carlyle