Help Me Finish My Twilight Crochet !

So recently, well more like for the past month, I've been crocheting myself my own dress / sweater (I'm not sure yet what I wanna do w it lol).

I made my own pattern using StitchFiddle to create a twilight panel! It's that iconic movie poster pose of Edward and Bella in Twilight (the first movie). The problem is...

I don't know what to put in the back, like if anyone can show me some photos that i could put as a backing? I want it a kinda subtle but recogniseable piece not tooooo on the nose.

If someone could please help me LMK!!!