A wonderful shot here atargiros, blue, orange and green go so well together as complimentary colours. The focus is great and the composition is lovely.
The green could be de-saturated a little, which would also enhance the focus on the dragonfly.
The red flower is distracting though like wilw mentioned, and depending on which post processing software you are using maybe that could be de-saturated also to make it less noticeable, or changed to a greenish hue to blend in more.
A vignette may help hide it a bit also, while still bringing focus to the beautiful dragonfly.