Beautiful gauzy layers of petals - very nice in B&W. I'm uncomfortable with the composition, the way the large flower is cropped on the right, and the flecks of light in the background are distracting. I would try either cropping more of the large flower off which would emphasize the smaller one more, and bring the viewers eye to the great detail texture in the large flowers petals. Or reshot and try to include the whole large flower - oerhaps in controller contitions with a solid background.
Hmm. The size and angle make the shot feel unbalanced. I understand needing to highlight the size of the bloom on the right but I can't help but feel there had to be a way to make the result feel less awkward.
Great DOF. For most flowers I like to see the focus around the (stamens) middle of the flower. Ususally the most interesting part. Great tone and detailon the petals. I think maybe using the rule of thirds on the larger flowers middle area instead of the smaller one would command it more attention. But that is one opinion