Striking as a thumbnail, but let down slightly by the level of noise, and the more undefined than expected nature of the petals. i do like the use of the over-exposure here as i feel it is effectively applied, and i actually think that the narrowness of the crop fits too. a bit of noise reduction, perhaps a little more sharpness and a tad more saturation might bring it out a bit more.
My First Weighted Scoring System ™; composition + technical 1.5/3, challenge 1/1, post processing results 1/2, ooooh factor 1.5/3, originality 0.5/1 = 5.5 (rounded to 6)