A strong capstone demonstrates one complete user workflow rather than a long list of unfinished features. A project tracker, for example, can show how a browser form, Django application rules, PostgreSQL records, and an API fit together.
Choose a small, testable scope
Write down the user, the task they need to complete, the records the application stores, and the response they should see. Define the database relationships before building extra screens. Use fictional sample data and make the project's assumptions explicit.
Test the boundaries that matter
Test valid form submissions, missing values, database relationships, API validation, and authorization. A meaningful denied-access test proves more than a screenshot that happens to show a successful page. Keep tests focused on behavior people depend on.
Prepare the repository for another developer
Use Git commits to show the progression of the project. Document prerequisites, environment variable names, installation, migrations, and test commands in a README. Never commit passwords, API tokens, or private user data. Make sure a fresh setup does not depend on machine-specific files.
Present decisions, not just screenshots
Walk through the main workflow, explain the model relationships, show how validation works, and describe a tradeoff or limitation. Deployment steps vary by host, so prepare a checklist for the target environment and verify configuration before release. Completing a project supports a portfolio; it does not guarantee an interview or job.