Very vibrant colors that feel a bit oversaturated although they provide an excellent contrast to the more or less plain background. Slight vingetting in the upper and lower left corners that should have been cropped out. Nice use of DOF to concentrate on the middle section of flowers.
Nice colourful picture. I don't think a lot of people will consider this a macro shot though. The flowers look prettywell actual size. Maybe a tighter crop would have helped. Great flower picture.