Nice one Byhaugh, much much better.
Now, only you can tell us, how have the colours of the flt been rendered... more or less true to the fly? How about your white balance?
Looks like you've got somewhere near your optimum distance there for your camera/lens. Sharp as a tack!
The new background looks the ideal kind of tone - won't cause too many metering problems, and is quite pleasing, calm and not distracting.
How much better do you want it to get?
Agree with Flytire though.... a tighter crop and it would then be perfect. I like the fly to be able to 'breathe', but not have too much dead space either. I favour a square crop when the size and shape of the fly permits. The image quality you've got there will allow a close crop.
Made a crop for you here.... and tweaked the contrast a little too.