I like the second picture more, it's like she's your angel and she's looking down on you and she guides you. But you can also use the first picture, that one does have the heroine idea behind it like Kendelle said...
As for the story, maybe something about her lyrics? That her songs helped you through various situations in your life? Hmm, I don't know anything else, this is the first thing that popped into my head.
Anyway, good luck on your essay!
