You've captured the feeling of softness here for sure. The curls work for the challenge. Not sure about the off-white greyish look to this. May have been your intention but it seems like this needs a good tweak with levels.
The fact that it's out of focus makes it look like a white rose. Interesting effect - I wonder whether it was intentional. The white however looks grayish a bit and at least the center could be in focus.
Maybe a little to much on the soft focus for my own preference. Nice crisp details on the fabric might have made more impact on me, but as I said, that is a preference thing, not a flaw of any kind.