I really like this. You were in an ideal position. The composition works well, and you captured a very interesting facial expression.
I'm curious, however, why you kept it so dark. I assume you want strong contrast between the bright spots and the rest, but one could preserve that while bring up the shadows and lower mid-tones to bring out some of the detail and texture that's now almost lost.
I think the presentation really captures the moment.
The image is a powerful testament to the photographer's eye.
The decisive moment and the subsequent treatment of the image create a truly evocative piece.
A slight adjustment to the composition, providing a bit more space above, would enhance the overall harmony.
Nevertheless, it's a stunning photograph.