Improvement meme

My digital artworks cause I don't date my traditional art orz...just imagine ugly stick figures XD I chose my 'best' according to my personal opinion....

-My first digital artwork when I first got my tablet~ (in the middle of September) didn't know my pen pressure wasn't working, didn't even know I HAD pen pressure! Took about 3~4 hrs or drawing? (in my scraps with most of my other stuff if you want to kill your eye by looking at the full picture...)
- September, pen pressure still non-existent to me. Used the pressure tool for the vector layer on Paint tool sai to adjust the line's thickness. Took about a whole day so 12 hours give or take. (Yes, I take extremely long...)
-October, same thing as September but I took much longer. Probably two times longer or something..=.=..OTL
-November, same as September. Time is probably between September and October so lets just say 18 hrs
-December, finally got my pen pressure working (had to install some CD which, according to the instruction book, didn't effect the use of the tablet ^^) Spent AGES on this! And since its the holidays, I spent DAYS working on it. 5 days or so but i kept procrastinating so probably.....30 hours or so....?

The time keeps increasing so I'm not sure if it still counts as 'improvement.' But yeah, check out how inconsistent my drawings are!