i noticed you have your faces flipped, so you changed the settings for the mountain, and valley lines. an easy way to fix that is (before unfolding) go to 3dModelWindow> Change Coordinates> Flip Faces. then the dark blue lines will be the more recognizable mountain fold, with the normal dash, and valley will be light blue with dash-dot-dash style lines. just FYI. but i got it fixed on here since i had to re-size it for me anyways. i got the scaled one for me down to 7 pages..
also, i scaled the boot to fit my shoe rather than my body size, i laid my shoe on a letter size paper to see how big it is, and joined the edges along the bottom of the boot, scaled it down until it was about 1.5 inched larger than my shoe, front to back.