I am designing a mobile app and have recently watched Corbin's videos on primitives and design gallery which were super helpful (hoping you can get around the API regulations and launch 5c club), but I'm a builder not a designer. I try to use Google Stitch to help with design but don't really have a feel for what "good design" is quite yet. I can tell something's off, but not sure how to fix it. Putting a question out for anyone and everyone. How do you approach design?