It would be more informational. I never tried to package for Ubuntu because I can’t see the whole process end-to-end (from the source code to the package in the official repository). I already dealt with Snaps and I could understand the whole process.
The first part is simple. I have the source code and I need to create the files inside the debian/ folder to be able to build a .deb package. There is plenty of documentation about how to deal with this part. After that, the mysterious begins to me. How can I submit the .deb package or the source files (.orig.tar.xz and debian.tar.xz files) so it can be included as part of the universe repository? (with and without sync with Debian). I read someone I need a sponsor because the universe repository is controlled, so how I find this sponsor? How do I submit my code to them? How is the review process? And one technical detail I’m interested in is: after approval from the sponsor, how would we push my source to the repository for build and distribution?