Its very bright vibrant and clear. Perhaps you would have done better to leave the birthday balloon out of the shot. The flower is so beautiful it deserves to be the one and only focus of the picture.
The festive mood of this lovely flower (and the balloon in the background that explains the title) is dampened by the very dark background. I'd make the balloon more prominent or change the title, and I'd lighten the background by at least 50%. I like the framing, except that I'd blur it rather than leave the cloned shapes since they don't follow the original line exactly. Super color on the flowers and I like the way the color takes my eye all the way across the pic.
Just wanted to stop by and congratulate you on this being picked for one of the three showpieces on the homepage this morning. It's very lovely and more than one person, judging by that and your c-index score, was more than impressed with your fine upload. Now I'm wondering whose birthday I missed!