I think this particular photo doesn't fit very well in a 'shapes' theme. There are obviously shapes present, but they do not, in my opinion, create any particular impact for this image. This photo seems to tell me more about texture, and on a deeper note, contrasts.
The point of view here also doesn't seem to provide me with something strong enough to hold my attention. Maybe a different camera angle and point of view would strengthen this image.
This is such a wonderful shot of a flower .. it has to be one of my favourites now. I love how you did a loose crop
the pink color is beautiful, and the background compliments it
DOF works really well, the angle you took this photo at is nice
Not really spot on in terms of the challenge, but I love this shot