Proposal Poster, posters for kids to hold

C'est ce qu'une entreprise en/au(x) United States recherchait pour leur poster design

I am proposing to my girlfriend soon, I need two posters made for my kids to hold one I want to say “be my mommy”
And the other “will you marry my daddy”
Both in horizontal format. I plan on sending the files to a print shop to get them printed on a large poster. Simple is fine with maybe a few graphics. Open to anything. Kids will be holding it from the beach as we are on a jet ski close to shore. Must be readable font from a short distance Voir plus