I like this shot, but for me there is too much sky.
Personally I would have made this into a panaramic shot lossing some of the sky and the lower section of the bushes but retaining the reflection of the hills in the lake. I've uploaded a quick mod to show this.
I like the idea of the shot, the composition of it may have been improved if the shot had been taken from slightly higher to show a little bit more of the flower head and also leveling the shot to the brackground would have removed a distraction for me.
I did try some shots on longer exposures but i was hand holding as i had my young son and daughter were with me, setting a tripod up just wasn't practical so they didn't really come out, hence for the short shutter speed.
It was definently more luck than judgement to catch this one as it burst.