thanks for the encouragement! I managed to rig my cheap tripod up so that it would hold my camera steady, even when pointing down. I kept the same camera settings as above, except that i changed the ISO back to 100, and put it on a timer, to further eliminate shake from the button press.
After browsing around for a while regarding focus stacking, I downloaded CombineZM and ran 5 shots through it, which i took in manual mode. This gave me the attached image, which I then took into photoshop for a bit of unsharp mask and level adjustment.
Unfortunately, the other stacks I've tried to process have very heavy artifacts, and a few just came out strange, nothing like a photo.
this is probably my best, and sharpest macro shot yet, so any feedback would be appreciated, in terms of what could have been done better, on any level.
here is a full-res version of the entire result:
(link) - finalstack1-copy.jpg
as far as I can tell, there are no obvious artifacts.
HOSTED PHOTO
please log in to view hosted photos in full size.