I like the Joan of Arc picture... Here's one of my favorite from that photo shoot.. don't know if you consider it better than the sword swinging one though
You shoudl maybe write about someone who almost gives up... but in the end remembering someone she thinks of as a 'hero' makes her not give up... kinda like a chain... she things of someone else as a hero and models after them... then someone looks up etc.. Am I just rambling... I'm not good at making up stories... but the angel one sounds more like a fantasy than a reality... I think realities do much better in school classes than fantasies... unless the assignment is to specifically write a fantasy
Anyways like someone suggested the lyrics to Endless Sorry here is the translated version lyrics of Free and Easy

Maybe helps alittle with what I'm saying
FREE & EASY
Sometimes I ask myself,
how much farther will I have to go?
I hear
your voice.
I hear a voice
saying "don't give up"
I remember the words
"Your happiness is my happiness"
If you're tired of denying things
and seem as if you're not yourself...
Belive in me.
I'll always be here.
The proof that you're alive
exists inside of me.
In this, this dirty city,
you're the person who
gathers up and shows me
something beautiful.
I hear your voice.
I hear a voice saying "don't give up"
Believe in me.
I'll always be standing here.
In this, this dirty city,
you're the person who
gathers up and shows me
something beautiful.
I'll always protect you,
so you never ever lose
that which you have clutched
close to your heart.
Sometimes I ask myself,
how much farther will I have to go?
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Oh and I attached my fav pic of the Joan of Arc photoshoot... it kinda illustrates Free & Easy better than the pic you have above... This song is kinda Ayu speaking in her head... and she looks like she's contemplating giving up or going on in this picture...
Sorry if I wasn't any help