Well done, John! Btw, don't worry about the proportional editing values here. It really doesn't matter how close or far away you are from the object in world space, because proportional editing works almost identical to soft selection, except there aren't color gradient cues to help you see the area of influence. In other words, a proportional size of 1.0 is still influencing the same distance from the selected polygons or vertices up close as it would far away, just like soft selection. It also makes no difference if you're in ortho or perspective views. It affects the mesh the same. Try it out for yourself and see. The info you gave in the video works just fine!

If I may suggest one thing though, it is that you should use the proportional editing "connected" option for some of the rotations! I noticed when I had the pentagons selected towards the last part of the tutorial, increasing the proportional size started to affect the outer parts of the mesh, and that's probably why you had to use the corrective smooth modifier. I used the connected option instead, and it came out nice and clean!

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Tools :  3dsmax 2015, Daz Studio 4.6, PoserPro 2012, Blender v2.74

System: Pentium QuadCore i7, under Win 8, GeForce GTX 780 / 2GB GPU.