I love the super-sharp veins in that one wing. Sharpest focus is there leaving the head just a bit soft. Some selective sharpening of the head might help. I like the image design and the BKGR.
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It's a fine shot though I would suggest you went in just a little tight in order to get a frame filling shot as a consequence this has minimised your DOF.
The colours are very striking - I may well be wrong here but are they a tad over saturated or perhaps the contrast a tad high?
A cool dragonfly giving you an excellent pose! To my eye, the overall sharpness within your DOF looks good. I also like the comp and background. Very well done!