Add Custom Guides

I want to ask if anybody could help me creating a grid with LUA script (example script: darktable lua documentation - passport_guide (darktable-org.github.io) )

I don’t have any experience with scripting (maybe just a little HTML/CSS, and reads/edit a little python script).

Is it better if create another topic and mark this one as solved?

This is the guides I want to create


It is a variation/simplification of the Dynamic Symmetry grid, quite similar to Rosarivo grid I often used in publication design. This is my go-to grid because it contains an intersection point of ROT, a center grid, and a diagonal grid, I also added a little Crossmark for the golden ratio intersection references.

Thanks!