They look soft, and the composition leaves much to be desired. They just look like a really zoomed in view of a bee if you were standing over a flower in a garden looking at it.
Try to experiment with the angles, get below the flower, or on the same level as the bee. This will let you mix up the backgrounds for some more interesting results. Another tip from my limited insect photography experience: wait and wait and wait. Rather than snapping an "ok" frame, wait and wait ans wait for the bug to move into a better position. The results are worth it!
Here are a few macro shots from the last time I went "bugging" to give you an idea what I'm talking about. All natural light in bright sun, no flashes or fancy rigs. Just a Canon 50D and Tamron 60mm Macro:
(Disclaimer- I am not claiming to be good at bug photos. Just some thoughts!)
EDIT: Looking again, you could do an awful lot to punch these up in terms of processing. What do you use?