Sebastian Beller enhanced the user experience in the UCB-TallerDeDesarrollo/TDDLab repository by delivering a targeted update to the Practice Deletion workflow. He focused on improving the clarity of deletion notifications, reducing ambiguity for users when removing practices. Using React and TypeScript, Sebastian implemented an isolated change set that updated the notification message, aligning feedback with product expectations for practice lifecycle events. His approach emphasized maintainable front end development, with clear commit messaging and traceable changes. While the work addressed a single feature over a one-month period, it laid the groundwork for future notification improvements and maintained high code quality standards.