Dave,
Lots of promise here! It's a pretty butterfly in a good pose, well framed.
Three things come to mind:
1. Your HTML is forcing the image to display at 1272x1112. That is the image's natural size, but forcing it prevents my browser from automatically resizing the image to fit my laptop display. I had to jump through a few hoops to see the whole image at once.
2. Overall the image is darker than I'd like. There are hardly any pixels with value over 210, and all of those belong to the blown-out flash reflections near the wing veins. Try playing around with a Photoshop level adjustment layer. You'll have to compromise overall appearance against blowing out a few more pixels near the reflections. Also bear in mind that I haven't seen the actual butterfly or the leaf that it's sitting on. Perhaps they really are dark, and brightening the image up would just make it look unnatural.
3. The image also seems a bit soft. It's got lots of DOF, so perhaps the problem is that the aperture was stopped down too far and the whole thing blurred out a bit from diffraction. (If you've missed recent discussion in the technical forum, see
this topic and the links in it.) Given the current image, you might try sharpening it, say with unsharp mask in Photoshop using a narrow but strong filter, maybe around 80% at 0.7 pixels. That will bring out detail, at the cost of increasing the noise also. Which is better is a matter of personal preference.
Is that the sort of advice/comments you were looking for?
--Rik