Composition
This was shot from below, giving a nice backdrop of the sky. The use of the sun to light the back of the flower as well as part of the front is atractive. The tree in the background is a bit distracting and the buds don't really add to the image. A different camera angle might improve the composition (moving further to the right?) and putting the main subject in the top right 1/3 corner might help but you might lose the backlit petal.
Focus
The shallow depth of field aids the composition and the primary subject is nicely in focus. The sharpening you applied looks just right.
Exposure
The exposure was well handled, the highlights are just clipped but there is no loss of important detail, the same is true for the blacks.
Challenge
One could grumble about what purple is - your image is perhaps a little blue for me but that is nitpicking!
Overall
This image has potential - it could possibly have been impoved a little by trying out some alternative camera angles but the combination of front and backlighting look great.
Hugh
Any comments or reactions, feel free to contact me.
I really like the backlighting on this. Although the trees mimic the shape of the flower, I don't think they really help the composition. IMO, the single flower, with its beautiful symetric shape against the blue sky would be stunning.
The tree in the background really hurts this. The two buds below the flower don't add much, either. It's a really good capture of the color and translucency of the flower.
Symmetrical in theory (and title) but not composition wise. Since flower is "leaning" to the left, I wouldn't have minded if the stem was centered. Still, the right side feels heavier because of the dark trees in the background.