|Howdy from the Critique Club!
The flowers you have chosen make for a lovely subject. I think that you have captured their delicate and fragrant nature well.
Your photo has great depth, giving the shot an almost 3-D appearance. I would like to see the edges of the petals within the frame...as it is, the tips being cropped away stops my eye, leaving me wanting for more in the frame.
The focus and DOF are nice in this image...the sharp edges and delicate softness of the petals are both captured well, along with the fuzzy stems. The blurring in the background keeps the focus on the blooms.
The background seems almost split in half horizontally...the greenery on the lower half and the beige color on the top (which almost has a radial blur to it that is quite interesting). I would prefer to see a more constistent background, either all foliage or all beige, but that is my taste. It isn't terribly distracting and seems to work here, but I wonder how it might be even better with changes in the background.
The lighting is beautiful along the right two-thirds of the picture, but in the lower left corner, it darkens...and coupled with the dark background in that area, it becomes just a bit too dark.
The color of the petals, on my monitor, appears to be more of a blue shade than purple...which might have posed problems for you during the Purple challenge. I believe that voters were looking for the more traditional, jewel-toned purple rather than the many, and quite lovely, variants seen in the challenge.
I like the compostion of the three flowers...perhaps a bit centered, but sometimes centered composition works well, and I think this is one of those cases. You might try different crops from the original and experiment with centered and off-centered placement of the flowers, just to see if you come up with a visually pleasing arrangement that works as well as this one. I love to experiment myself, and am constantly learning different ways to present the same photo!
All that said, it's a lovely image with many positive attributes and places upon which to improve. If you have any questions, please feel free to PM me...I'm learning too!!! :o)