I'm going to say this now, you should never, ever, ever, EVER use the scale of somebody elses body. Even if the person is the same height as you, you will find that at least 1 part will not fit right.
And as my 3rd link says, employ my help for scaling. I've helped about 300-400 members so far, and every one has come out with PERFECTLY scaled armour parts.
Besides, like I have said SO many times, I'm always looking for improvement ideas on the tutorial. If you found the tutorial confusing, don't just whine about it. Tell me how to improve it!