I recently wrote Debian and Ubuntu packages for anvil, a small software package using BSD Owl Scripts as build system. I documented my work in the form of a short document and of a series of commits in a dedicated branch of the anvil repository.
You can take advantage of this documentation if you want to write Debian or Ubuntu packages for your git-hosted software built with BSD Owl Scripts. Take good note that this documentation is focused on the technical preparation of a package.
If you consider to submit your software for inclusion in Debian repositories, you should get in touch with a mentor which will help you to implement all the best practices described in Debian New Maintainers’ Guide.
In contrast, you can to setup a so-called private package archive to let Ubuntu users easily install your package within minutes. Nevertheless, Debian guidelines and processes guarantee the consistency of this distribution, which the publication in private package archives do not.