Lovely subject & composition & colours. This looks almost like what many have thought my image of this challenge to be ... but my subject is nowhere as organic as yours, but you did a wonderful job. 7
Good color on the flower. The leaf on the upper right corner should have been removed to show the whole flower, it just doesn't look like it belongs there.
Nice flower, nice sharpness. To apply to a circle challenge, I think it might be better centered and without that leaf on the top. Also, watch the shadow on the petals in the lower right corner.
It would be a shame to lose the color mixing of the rich greens of the leaves, but I think this pic would have done better if it was cropped in about 30% to really bring out the circular aspects of the flower.
pretty, but I really want to be in a bit closer (tighter crop) - you have clipped the outside edges, and if doing that, then realy get in there and focus on the detail in the flower, not the surrounding bushes. composition v central - would suggest putting flower centre onto a third line when recropping.