I think you guys are misunderstanding each other ...
This is the worst thing you could ever do. Working from the detail to the big picture ends up wrong 95% of the times. Especially when you lack experience in what you're drawing.
Kuro didn't mean that as a fact with a 100% possibility, the remaining 5% would fall on the other artists that Kanu mentioned that can do it pretty well. ( Well, I guess 95% is a little too much of a comparison maybe 70/30 )
Like MRG said, the one Kuro mentioned isn't the universal rule. Everyone is free to do whatever they want specially amateur ones who doesn't have any money to enroll in an art school. But I'm not saying Kuro says is wrong, it just would help the
Twillusion to have a better understanding about anatomy than the one he/she is using now.