I don't think I understand what you're saying with the first part...
He's basically saying that when it comes to adding the characters, you either copy-paste them "as is" from a previous panel (and it shows) or you seem to make them from scratch altogether whenever the pose changes (and it takes time). You would save time and add more variation if you saved a blank template for each major character where you can quickly add the appendages in various motions and different expressions, and then bam! add to the panel. *
Noone masters this istantly, and #2 is already better than #1, keep 'em coming.
* I'm not an accomplished avatarist, my lecture of things also comes "as is".
The Pen is mightier than the Sword - when the message is written in Blood.