That's a fun shot you got going on. I like the micro photography, always been a big fan of it.
As for using it as a desktop image, I think I would. I tend to keep my icons along the outside edges of the screen, and this image would allow the icons to exist without getting lost in a very busy image.
I don't have any other direct feedback for you. If I was going to be very nitpicky I might suggest having a wider range of gray scale... but your current scale of color doesn't bother me.
Nice work! Post More!