This photo is stunning. The way the bright light glows through her hair hints at a sort of angelic feel. And as she looks back it's almost inviting, like...come to the light with me. It's almost a magical feeling. I love how everything other than her is blurred, as she is definitely the center of attention.
Now the only thing that throws me off about this photograph is the background to the right. She looks like a beauty out of nature, with golden leaves in her hair and the shining light behind her is more organic looking than manufactured looking. But you look to the right, and you see two big doors, a wall, and other objects of the room. It really dampens the vision that the viewer, or at least I, got when first looking at this photograph, because the illusion of an angel is ripped down to Earth by the background.
I suppose that if the light on the doors was faded, or the background was less noticeable then this wouldn't be a problem.
Over all, this photo is beautiful. It looks like a something out of a fairy tale, even though the background sort of pulls away from that.
the lighting is magnificent, the model beautiful, her gaze shows confidence and a hint of curiosity - and the flowers help the composition as they are not cloyingly sappy as one often sees on deviantart. Nicely done!