A while ago, I found a series of videos on Nico Nico Douga wherein manga characters from the first volume of their respective titles are compared to their later incarnations in the same series. In most instances, this is done to show some kind of great contrast, either by a marked improvement in drawing ability or an unusually large shift in style. I think it’d be to everyone’s benefit to take a look, and because I understand that not everyone has a Nico account or wants to fumble with the Japanese language registration, I’ve taken the liberty of uploading all three videos to Youtube. You can find them at the bottom of this post.
Regardless of how exactly the change comes about, the shift or transformation in art style seems to most often come from increasing familiarity. Speaking somewhat from personal experience, when you first start to draw a character, even if you’ve planned them out extensively, there’s still a period of struggle where the character’s design and by extension their personality and physical language are not yet ingrained in your psyche. The more you draw the characters, the more natural they feel to you, possibly eventually reaching a point where you’re so comfortable with them that your aesthetic sense and personality start to shine through the characters, almost subconsciously. It’s like your body and mind start to prioritize what’s really important to you, and I think you will definitely see this happening for at least a good number of your favorite artists.
So take a look, be amazed, and lay down your own thoughts and feelings about art in manga. If you’d all prefer, I can even compile a list of all of the artists and titles mentioned here.