Wet the extra leather slightly. You need two small mini straps to mount the watch. Use your chopstick/scribe to trace the design onto the wet leather. Cut out with scissors and razor knife. A leather punch is helpful. Check the fit and adjust as necessary by shaving away leather. This is called skiving. Once you like the fit, punch a hole for a rivet. Wet the mini-straps and shape around the watch hardware. Wet leather can be molded, and once dried retains it's shape. The photos below explain it much better then I do.