I just took apart a worn-out favorite pair of jeans, copied them, and sewed up a new pair. I knew what to do because I've made the Field Trip pants 4 times now, so the construction is familiar. I used Grainline Studio's zip-fly tutorial. I can't tell you how happy I am to have my favorite jeans back! I'm very tall and quite curvy, and nicely fitting pants are rarer than unicorns. Thanks for the lessons, Liesl! I feel like a million bucks.