Needs more depth, something to hold your eye.
to expand on whythe00's comment: I think the problem is that in trying to do the rays of light (very very hard I understand) you lost the focus of your painting. A lack of color can be useful to draw attention but it didn't lead to anything. I am supportive of this though, because I think that you rely heavily on color in many of your other works to get the pop needed in an abstract way. This was a step in a good new direction, I think.