like the gray and white treatment... the blurry end in the lower left/center detracts as it pulls my eye to a less important spot in the photo... otherwise you did a good job with the busy composition
The cluster of tacks in the lower left corner draws my attention away from the main group. I'd like to see these either moved farther from the center of the frame or given better focus. The DOF is a bit shallow and the few specks among the tacks are distracting in such a minimalistic picture.