Juliet's first fear is about the potion, She's scared that it might not work, so I chose a check and an X with questions mark around it to symbolize her first fear, the check means that it might work and the X means it might not work and the question mark around it means she doesn't know or that she doesn't have a clue.
Juliet's second fear is marrying Paris, I chose 2 black colored rings and one of the rings have a yellowish blackish stone. The rings represent marriage and it's colored black because they will get married but only one person is happy