Spider with prey

This image is a focus stack tried in PS.
With bugs/insects, it is difficult to keep all the frames aligned even though we use a tripod (obviously owing to their movement). This gave me a difficult time while post-processing the image (stacking).
I do realize that despite focus-stacking, I still don't have the entire subject sharp (should have clicked more frames to bring the legs in focus).

Techs:
Nikon D300 + Nikon 105mm VR micro + tripod
f/16, 1/13, ISO800, mild off-camera flash from left to fill-in.
Cloning, cleaning up of stacking artifacts.

Critiques welcome.