Overall I think it's quite well done. There are two things which I would suggest changing slightly; firstly I would have positioned the iris slightly more to the right, it's still a bit too close to the centre to my eye. Secondly, I don't think the background is blurred quite enough so the subject is still getting lost in the background a bit, perhaps the DOF could be a bit lower to blur the background a bit more. However IMO it is the best photos in your gallery so far, although I only had a quick look.
Just wondering if my break has helped me improve at all.
Molly