Congrats on your first entry, you got a nice score.
I thinks you did a good use of DOF, wich helps to isolate your subject, though I migh have worked better if you have filled the frame a bit more with your subject to show more detail, also, the focus seems a bit off, this might have something to do with your shutter speed, since theses little guys tend to move fast, you need a faster shutter speed.
About the editing, you might want to try lowering a bit the saturations on the greens.
JPEG Police here. Please open up. I have a warrant.
I noticed a slight fuzziness and a lack of detail to this photo and I think most of it is due to the use of excessive JPEG compression. Your file size of only 27k indicates a highly compressed image and that is what is robbing a lot of the detail and sharpness from this image. Check your compression settings when you save your file. Always adjust JPEG compression so that your file size is as large as possible, but within the challenge limit. (150k for this one). The compression artifacts are not glaringly obvious, though, and I expect I may be the only one to leave such a comment.
I also think the crop is a bit too centered. It is a nice close shot of a damsel fly, though and I expect the full size image has a lot more detail to it.