The colors compliment each other terrifically. I really like how most of the focus is towards the flowers first, that's the part that's most in focus and with the brightest color so you've got your focus right. But I'm not really liking how the vase is a little out of focus. I'm not a photography person so I don't know how to help you with that, but as a composition, that's what I feel. I like the orientation of the flower vase, it's very simple and it gives the photo a different feel to it. I like the wood that peeks out from the corner. It gives the viewer a feel of looking out their window and seeing a gorgeous vase filled with flowers.
Hey, I´m no premium member so I´m not allowed to write a "real" critique, but I´ll do it as a comment:
I like the roses, the vase, the wood, the colours, the bokeh background and the arrangement itself - the only thing which disturbes me a bit (but it seems to make the photograph special somehow, so perhaps it´s just me) is the right bottom edge, where there is sth like a diagonal cut where the wood goes into bokeh... I´m more into those symmetrical things, so perhaps that´s why it´s disturbing me. Somehow though it looks like....well, you know when presents got that diagonal ribbon on their one side, with a bow on the other side? It reminds me a bit of that, so well..... I guess I like it^^° (but my sense for symmetry is disturbed, yes it is ^^°
Sorry for my bad english, it´s quite a time since school´s over for me and I started studying...^^°