Could I be arrested if I paint fake blood stains on my car for Halloween?

Halloween is next month and I was thinking about spray painting fake blood splatters and putting fake shattered glass designs on my windshield and just removing the designs after Halloween is over Only thing im worried about though is if a cop sees it and suspects that I actually did kill people. Would this be a... show more Halloween is next month and I was thinking about spray painting fake blood splatters and putting fake shattered glass designs on my windshield and just removing the designs after Halloween is over

Only thing im worried about though is if a cop sees it and suspects that I actually did kill people.

Would this be a good idea? I need advice before i do it
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