Very cool Dragon! Good job picking a "magic" angle to maximize your apparent DOF at such a large aperture. I love that the thorax is sharp, especially with those markings, but it appears the front of the "face" may be slightly soft (hard to be sure at this image size). You may want to consider darkening the perch and brighter areas of BG.
Very nice differential focus, I love the fine detail and the dragonfly is beautifully coloured. I know it is not always possible but had you been able to alter angle slightly to avoid the leaves touching the tail the image would have been stronger. I would be tempted to brush and clone a little to eliminate the leaves far right.