What an excellent shot you've composed. The only thing I'd say that isn't quite perfect is the focus plane. I can't tell if it's just my eyes (because we're talking a small detail here) but it looks like parts of the butterfly / the flowers next to it are a *tiny* bit soft. Nothing a little judicious USM couldn't fix, but I thought I'd mention it.

Either way, post-card city! Heck, poster-city if you have GenuineFractals and/or a high MP camera. Great job.