Hello there. You wanted feedback? you'll get it :3
First of all, I, personally, find that the overall image is very dark. Yes, I like the subtlety of how the *princess* emerges and blends into the darkness, but the rest of the darkness is overwhelming.
The flash on the left should also be worked in more elaborately, rather than an *in-your-face* approach

However, it IS up to you to establish that balance between lights and darks.
Nevertheless, a good try and I'd like to see you taking more risks with your designs and really testing the limits of your creativity :3 Good work ^__^