WIth or Without them (the lines)!

Some time Ago, i uploaded these two Drawing to my DeviantArt Gallery: 

WITHOUT THEN SHE LOOKS YOUNGER 

WITH THEM SHE LOOKS OLDER

 But what i didn't explain there, at the time, is that i didn't uploaded the full version of the Drawing, where you can see an... "x-ray" vision of the Guy insides (of his mouth!).

Take a look on the "complete" version of these Drawings: