For all I know Bullock spet all his time on this getting the texture of the little hutch in the background Just Right.

I don't recall seeing this one before (though I do have a book of Bullock somewhere...). Given the space given to the wall, the blackness of the cover, the spill of light, I get the impression that this could be a metaphoric portrayal of life projecting itself out of blackness towards light through a random and somewhat indifferent existence. But that reading comes only becasue of the title, and obviously YMMV