dlc - Thanks for posting. I will give you my opinion - I am still really working on my photography, so my opinion is worth about what you paid for it...
I really like the subject matter. The yellow butterfly and flower really look great together. I think your point of focus is spot on - the head and top of wings is nicely in focus, which must have been a challenge given the subject. I also like the bokeh of the background.
Since this is the critique forum, I will give you three ideas that I think may help this shot.
1. It would be nice if you had a deeper depth of field. You will notice the front of the flower and butterfly are in focus, but the back of the wings are not. I do not know anything about the lighting conditions, ISO or the F stop you used, so do not know if you could have used a smaller f stop without introducing more movement of either the camera or subject.
2. I think the shot has an overall yellow tint - the flower yellow seems blown out, and the green in the background seems a little more yellow than it should. This would be easily adjusted in PP.
3. I would like to see the flower and butterfly a little less centered so my eye has some place to "go", and does not feel so stagnate. Either that or a really tight crop.
Great first post - I expect that if I had been there I would still be trying to figure out how to hold my camera when the butterfly flew away, and would have missed the shot entirely.
I hope this was helpful.
Dave