Vibrant colors, sharp where it should be. Composition-wise I would think it may be better if you have moved the camera about one half to one full inch to the left :)
From the thumbnail I was going to suggest an alternative crop...but after seeing the full size image I like it...I mean love it...as is! The in-focus stamen set against the OOF petal is nicely balanced against the focussed petals at right. If anything I'd very slightly burn the lighter areas. Well done!!
I can see what Daniel means about ever so slightly burning the highlighted areas - I think that would be the finishing touch. I love the way you kept the orange tip of the pistil from colliding with the orange of the petal - very nice placement, Ed.