Very nice macro. I like the thaw drops in the spider net. I think the photo would look better when the bee (flea?) and the whole spidernet would be in focus. A smaller aperture could have helped to get more DOF. The white spot on the right side distracts from the main object.
It is just too bad the rascal couldn't have been flapping those wings about a houndred miles an hour. Then you would have had real fear. Macros sure are hard to get in total focus on a three dimensional subject, aren't they. That would have helped considerably. The bright spot on the right is quite distracting and may have caused some of your difficulty. A 6 by Autool
I think that's a horse fly, couldn't have happened to a better fly. Very good shot of the lower half of the fly, but the upper half (head, etc) isn't focused. Broaden your depth of field and get the whole guy. 8 Swash
I like the out of focus background, but I think maybe your whole fly isn't quite in focus. Some may complain about that bright spot to the right, but I sort of like it for balance. Nice composition.