Hi Gabriel, it seems you are getting the knack of it quickly :) . I don't have any additional feedback. I hope you're able to find a sponsor soon.
You can also look at the available packaging teams [1]. For your package it looks like the Debian Multimedia team [2] would be the most suitable one. I joined a packaging team for "my" first package about half a year ago and this worked out really well for me. All the best Lukas [1] https://wiki.debian.org/Teams [2] https://wiki.debian.org/DebianMultimedia
