The colors used in this photo are gorgeous. I like the tension created by having the receding cool colors in the foreground and the aggressive "pop" of the warm colors in the background.
If I were to suggest improvement, I would say reduce the importance of the center of the flower through darkening it or making it more out of focus. Right now you could argue the focal point is either the droplet or the very detailed middle of the flower, and my eye keeps bouncing between them, trying to decide which is more important in the composition. To see what I mean, put your hand over the middle of flower, and the droplet pops out. Take your hand away, and the uncertainty returns.
One more thing I do like is the repeated use of circles here: in the blurry lights, in the droplet, in the overall shape of the flower and in the flower center. The repeated variations of the same shape help tie it all together.
Many details gather to make such a breathtaking peace of art. Sharing is caring. Thank you! If only the resolution was a bit higher. After all, who doesn't want to set this blue lily as a desktop background.