Use Git & Github to submit your coursework as a pull request. Follow the pull request workflow defined in the repo you are working on. Repos and projects usually have a specific defined way to open your PR so it's important that you read and follow the individual guidelines.
Contributing to a remote codebase is a necessary skill for a professional developer. Opening PRs is mandatory at HYF. It is part of the coursework.
If you cannot submit your coursework you must post on Slack to get unblocked.