lovely
I love how you managed to really make it emerge out of the darkness.. Nice work on the squinty eyes/nose too. two points of critique though:
1] It would have been nice if the black spot was a bit broader at the bottom (so that it was more or less a rounded rectangle)
2] Especially on the bottom jaw, It has some problems with shading... it seems to curve inwards instead of outwards. I think this is mostly due to the big fully white areas.
Overall great work!