The best way to demonstrate how you build and how you think is to show us. Integrate data from some external data source into a simple front-end application. This is meant to be open ended, so have fun with it! You can show off prior work or create something totally new, whatever feels best for you. Include a link to what you've built and write up a short description that explains your approach and any critical decisions. Nothing crazy, just give us a sense of why you built it the way that you did.