Macro Photos Stacking

Macro photos usually have a shallow depth of field:

To get a better depth of filed there's a technique of stacking many photos, here's a nice tutorial using open source tools: https://patdavid.net/2013/01/focus-stacking-macro-photos-enfuse/.

And here's a result of around 20 photos being stacked:

There's definitely still room for improvement - remove halo around sharp edges, do even more photos (back is not in focus).