We're looking for a casual selfie-style photo (no filters, not posed), featuring an attractive high school or college aged (14-23) woman.
She should look like she is having fun. Nothing serious/sad please.
Picture should be clear and hi-res. Doesn't actually have to have been taken by a mobile phone.
In the examples, the girl with the ice cream cone against the red is the right look -- young and attractive, but feels too stock-photo-like. The second example is not bad, but her facial expression is too serious.