I recently participated in a Hackathon by https://replit.com and documented my process of conceiving, planning, designing and developing my submission:

https://denniecodes.hashnode.dev/my-development-process-from-concept-planning-design-and-building-that-i-used-for-my-replcon-hackathon-submission

Here is also a link to my project submission: https://front-end-developer-skill-tree.denniecodes.repl.co/