Focus Stacking ~ New to Me

I am interested in learning Macro/Closeup photography and understanding that Focus Bracketing is a good part of the process, I thought I would give focus stacking a try.

I did learn that stacking has restrictions on the total amount in file size it can handle at one time. So, I changed from shooting RAW to C-RAW from 48-50MB to 16-20MB in size. And not to try stacking 10 images at a time. What I found fastest was stacking a group of 3 or 4 images and then stack those stacked images. Learning is fun!

My first image is "just a strawberry" and part of my learning of what gear and camera settings works best for me. (Canon FD lens mounted on an RF body. At 18" from the subject the depth of field is 1/4".
f/1.4 - 1/2000th sec. - ISO100 - 50mm

The second image is a Fuchsia taken with a 11mm and 18mm extension tube and 10 feet distance to the subject.
f/11 - 1/30 sec. - ISO 1600 - 363mm.

The third photo is a Cancun Lily. For this composition I needed to be about 5 feet away to isolate the flower and avoid unwanted merging with the foliage. f/11 - 1.40 sec. - ISO 200 - 186mm.