I made a page-flipping sketchbook inspired by Matthew Yu's concept. Books and pages are some of the most interesting UIs to explore. AI gives you the basics unless you hand it a solid open-source to work from. So I asked for drag to paginate, which took many fixes for shadows, clipping, alpha masks and logic. Then a magnifying glass that has to move out of the way when you flip a page. For images I used gpt image 2 and it's very good at these Singapore sketches. I also love adding minimal…