Call me a simple man, but I love selfie poses like this. It's great if you can find a background that's a window view and pretend she's taking a picture of her reflection in some building, but in any case I like to pretend she'st getting some sunset pic for her social media, oblivious or uncaring to the havoc she's causing down below.
I will say the shadow on this pic is wrong, though. Ignoring the fact that the shadow is going in the wrong direction (it should be going more horizontally to the left), her shadow doesn't contour to the buildings behind her. The shadows along the right and top sides of the building should be erased, and extended with the paintbrush on the left sides. If this was the correct direction for the shadow the perspective of her head's shadow would need to be shifted against that building it's on, to a more vertical direction closer to her original pose. Try to imagine her shadow as a blanket, falling out of (or more into) sight depending on where it "lands". Also, the shadow should be blue, matching the rest of the picture.
She looks great though, keep up the good work anon (assuming it's your OC).