I think my art has changed. I have noticed this since posting my artwork to different sites I have listed.
But I can show examples here:
Drawn with touch pad in November 2013:
<img src="http://37.media.tumblr.com/c8b13c031a20bb996dcff70cfb2c119f/tumblr_mvpkycgTc71so8yv8o1_r1_500.png">
Drawn the first day I got my new graphic tablet on December 25, 2013:
<img src="http://24.media.tumblr.com/a5d5cde1441053fbea58d25cd4efec2a/tumblr_mye7udrfWR1so8yv8o1_500.png">
Drawn three days later with my graphic tablet:
<img src="http://37.media.tumblr.com/9490cb34f78ff44758446ae5394b8dfe/tumblr_myjhg4cc2w1so8yv8o6_1280.png">
Completed January 2014 with my graphic tablet:
<img src="http://37.media.tumblr.com/6a6ae1778fbd370948708afc39174aa3/tumblr_mzv69sQe921so8yv8o4_500.png>
No layers were used in any of those pictures. And I was still trying to improve my coloring skills. However, for over a week, I worked on the following picture. Not only did I learn how to use layers, but I also learned the secrets to better coloring. It is the layer mode called "multiply." And look what happened...
<img src="http://24.media.tumblr.com/2326bac882d5a2e9993e080c9da792be/tumblr_n563261Rr21so8yv8o1_r1_1280.png">
See what I mean when I said my art has changed?