Daedalus by Gabriel Alvarez

[abnyc]

Sorry to resurrect an old post, but there's one thing about this model still eluding me. When folding the back leg, steps 16-17, the butt/thigh trapezoid is diagrammed as longer and skinnier than it actually is in folding. As a result, I can't get that small gap between the two lower legs, which makes it look much more realistic. What should I be doing differently? Is the equal halves marking in step 13 wrong, or should I be folding in some of the paper at the back of that shape and so end up with a narrower back leg than front leg? Anyone who's managed to get a result that looks like the diagram, please help!