I like the composition, but the way the colour is spread distracts the attention from the flowers, e.g. the green bottom right makes the flowers look faded. Have you tried turning the whole background to sepia?
Those look like they are pretty flowers. I like how the colors blend with the Sepia background. The background is too distracting and the flowers sort of disappear into the background in this picture.
The Irisus are nice, a colors loss in the shade, why change the background? You could have played with the background lighting..I feel you need to let your camera help you..a bigger format
A nice capture and presentation of these lovely blooms. The selective colouring is a nice touch. Though it might have been better to apply it only to the lilies themselves. Thanks for sharing.