Selected intern's day-to-day responsibilites include: 1. Collect and evaluate user requirements with the help of product managers and engineers. 2. Illustrate design concepts using storyboards, process flows, and sitemaps. 3. Design menus, tabs, and widgets as examples of graphic user interface elements. 4. Create page navigation buttons and search fields. 5. Develop UI mockups and prototypes that clearly show how sites work and look. 6. Design unique graphic elements. 7. Prepare rough drafts and present them to internal teams and key stakeholders. 8. Identify and resolve UX issues. 9. Implement layout changes based on user feedback. 10. Follow font, color, and image style guidelines.