Setup for scanning branches

Don’t underestimate the level of detail you’ll get.

Below is a quick scan of a 20 eurocent coin I just did with my smartphone as an example.
This is an optimized preview quality reconstruction from source material that is quite noisy.

With proper lighting and using raw images the result would be a lot better.

 

Regarding your setup:

Your best bet would probably be to mount a “turntable” on the ceiling and hang the branch from it.

Then you can have the camera set up on a tripod in a fixed location and take photos as you rotate the branch.

Take between 12 and 36 photos per revolution, start at the top and move the camera down making sure you have plenty of overlap.

That way you can have the green screen as background and set up your lights on the left and right side of the camera.

This has the added benefit that leaves or twigs that are connected to the branch likely won’t move or be otherwise deformed.