Nice colors. Personally, I like a crisp background. The blurred image unsettles me. Heh... I'm nearsighted in real life, so I get plenty of this kind of stuff... but enough about me, the close up of the one on the right turned out really well and detailed, good job.
The short DOF is nice because it isolates the subject (the flower on the right). However, it seems that this shot was either taken hand held or in slightly breezy conditions as the focus doesn't seem as crisp as it could be (see full view). Aside from the focus, I think that this shot could have benefited from a little bit longer DOF so that both flowers were in focus. As Trisbert mentioned the left bloom is kind of in the way. It's not blurred enough or in focus enough to make an impact in the photo.
"To photograph is to hold one's breath, when all faculties converge to capture fleeting reality. It's at that precise moment that mastering an image becomes a great physical and intellectual joy."
~ Henri Cartier-Bresson
Wow...what wonderful summer colors! And you have to bring it up to full size to really appreciate that royal purple in the center. If it weren't for the petal overlap, I'd suggest you crop out the bloom on the left and frame the remaining right flower.
You will be led to the knowledge of the internal things which are invisible to you, by the external things which you see before you. . . . Even so then, we can represent to ourselves in thought the Author of all that is, by contemplating and admiring the (visible) things which He has made, and ever brings into being.
- Hermes