Observe what you like and dislike about the existing interfaces you use. Try to emulate the former and avoid the latter. UX/UI is HARD, it takes many iteration

Observe what you like and dislike about the existing interfaces you use. Try to emulate the former and avoid the latter. UX/UI is HARD, it takes many iterations to get it right. So, don't get disheartened if the first several dozen attempts fall flat. Just keep on. It' more efficient to do the visual design on paper, or some mockup tool. Forget whatever framework they're peddling at the moment, technology choice comes after you've decided what you're going to do.