Looks like an excellent job - not the easiest of subjects with all those droplets of water!
I haven't done any myself - but I may as well have as OH has been working on different techniques for a couple of weeks now and I get expanded conversations about every stage!!

LOL He's decided the stacking facility in CS4 is the best and CS3 is handy as his version has 'extract filter' to select the subject matter from the background as he's also experimenting with photo montage/composite.
Currently it's a shield bug (found dead) that he took 44 images of. We had to go out while that one worked away on its own

He's dealing with artifacts on an individual and manual basis - ie part replacement surgery LOL
Like you he uses a bellow system (PB6Nikon) and takes the images on pre determined increments.
He is in the process of deciding that perhaps 44 images is an awful lot to keep track of in the layers palette........
As his Mac is next to my PC I've learnt an awful lot - fascinating but I don't know if I have the patience yet.
I'm only just getting to grips with macro anyways.
I put a macro image post on 'Wildlife Photography' and I think it should be here.
How do I move it as not a single person has passed comment there!
Acher