I love the dahlias themselves. I do have a tiny problem with the blue/purple/indigo panel in the background. There's just a little too much of it. It's of similar 'volume' to the flowers, and it distracts my eye away from them. The color of it, per se, isn't the problem. It acts as a good contrast to the yellow. It's the amount of it. Possible solutions - crop some away, or select it and darken it or desaturate it.