Nifty pic, but I'll tell you what happens in the story so you have a better idea of what we're looking for. (not saying that pic can't be used though)
Most importantly this is the end of the preview section of the story, but it should suggest posibillities of more to come.
What happens is there's one of those accidental murder things. Faith is in a spot where everyone around her is suddenly dead, or can't have her around, and now there's this pesky murder rap thing. She has to leave. She doesn't know exactly where, but the reader is hoping it's Sunnydale. She jumps on the motorcycle of the guy she accidentally killed, and heads off. That's the end.
In my mind I'm seeing something like a dark haired girl driving away up the highway. Is there room in an avatar to do something like that? Probably not, so you'll have to find another way to tell us, "Hey, it's over, but it's all cool. Faith is on a motor-cycle, and she's going somewhere".
Edit
For example, with that pic, could you make her hair blow in the wind?