- Fork this repository.
- Clone your new repository to your system.
- Create a new branch.
- Commit changes and push the new branch.
- Open and submit a PR.
Once your PR is accepted, you may delete the branch you created to submit it. This keeps your working fork clean.
You can do this with a press of a button on the GitHub PR interface. You can delete the local copy of the branch with: git branch -D branch/to-delete-name
Don't despair! You are probably being asked to make a formatting change. If you have a local copy of the repo, you can make the requested changes, commit them and push them to your fork.