A few thoughts:
1) The subject doesn't take up enough of the canvas. I would have included more or zoomed more so the current amount shown takes up more space.
2) The picture is just a tad on the dark side for a flower shot. I would have tried to boost midtones to pull it up a bit.
3) The part of the bokeh that bothers me is the halo effect on the orange in the background. It doesn't look good to me. You have a nice lens, so I'm not sure where that came from. Maybe the extension tube.