I have applied vehicle graphic/vinyl and the key was always making sure everything was cleaned with alcohol prior and then misting with water while applying. And not doing it in direct sun. You'll always get some bubbles but there are ways to pop em and squeegee the bubble out. Minor ones will dissipate once they sit in the sun. I have worked at Sign shops and have had my share of vinyl applications. I am glad I don't do that for a living anymore. Selling steel is so much easier.
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