Try to make your image a bit bigger. This is a very nice shot, but much detail is lost due to it's small size. The colours are great, nice composition.
The position of the dragon fly is perfect. But, it needs to be sharper. I have a hard time getting my macro shots sharp, especially with moving objects but, IMO, the purpose of a macro is to show detail that is otherwise not seen by normal viewing. Well composed and very nice colors.