Pull requests are the way to change code using git. If you aren't familiar with them in general, GitHub has some excellent documentation.
When submitting a pull requests, ensure to include the following:
- Inlcude a issue number
- Include a descriptive title for your pull request, and elaborate on what's changed in the description.
- Include at least a short description in each commit, and more of one in the "main" feature commit. Doesn't have to be much, but someone reading the history should easily tell what's different now from before.