That morning glory is just gorgeous Paul! It's so well lit, nicely sharpened...really fabulous. The BG is a bit busy for me but I can learn to live with it...let's see what others think.
Good DOF on the flower with only f/5.6. I also like the subtle glow on the flower, but I agree with Julie that there's a little too much detail or bright contrast in the BG that distracts. Also, the bud ends up in the center of the frame, which stagnates the image a touch. I'd consider a little more angle to the flower in the frame, and a different crop -- maybe even square, where the shape of the flower will not make it seem so bulls-eyed.
You handled the flower very well. I particularly like the way you've handled the color here. Looks good.
I agree with what Julie and Bruce have said about the background. That said. I have made my share of Morning Glory images of late and the backgrounds have been a constant source of problems. Even wide open, there doesn't seem to be enough distance between the subject and background to give a nice smooth bg.