This is a great image that shows simplicity and minimalism. The colors are good but could use a bump in levels and contrast. A slight burn on the edges of the petals could also be a good sight. Not certain but worth the experiment.
You know, considering this is the same photo as the blue one (?), boy it sure has a different mood to it. Lovely and delicate. Despite the fact that I like it, I bet it would do really well here in a challenge. Maybe one will come up that fits.