Isn't it funny what we almost miss while we're concentrating on other things? I also like his position in the frame. I think compositionally I'd like this even better if the entire "ring" were included in the frame and not cut off at the top. I'd also challenge you to check your yellows - there are a few places where they feel oversaturated or blown...especially the two lower corners and top right corner.
This was cropped down so I do have the full "circle" of the flower. I did boost the saturation of the colors so I can tone them down a bit. I'm still trying to find that perfect balance of not doing enough post work or doing too much. Most of the time I lean towards not enough work. So lately I've bee leaning towards doing more. Maybe too much this time. Ha Ha!!! I will go back and look at it.