I like the composition, but your lighting needs some work. The flowers are indeed a 'point of color' but the light doesn't make them pop out with vibrant color and texture. Try sunrise/sunset light, and if that fails, a warmer whitebalance will make this light a little less dull.
I’m guessing you don’t process Raw files, in fact it looks strait out of the camera, and that’s OK. Based on that, I would only suggest you boost your ISO a little bit, it will help bring more warmth and help bring out your colors.