2013 IS HUGE FAILURE YEAR.
I posted quite a bit on DA through June-July but those were actually drawn some time in March-April because I used them as prints during convention season, which started in May. Drew only one picture in June and one doodle in Sept, then some sketches in October. I started getting back into things in November because I had to draw for a couple artbooks (lol). I think December has been my best month since after so little drawing for most of the year, I found it easier to experiment with colouring and coming up with better concepts, though most December-drawings are only on my twitter/tumblr so any improvement/changes might not be noticeable.
Overall, I think I got better at cging this year (as a whole), since it was my resolution last year to improve at cging. I also worked on expressions/lighting a bit as well, since I realized much of my art from 2012 had 'same-face' issues orz (yeah, pretty much always going to draw girls because I draw what's enjoyable for me, but I still want to improve so that not every girl looks the same).
IDK, MY PROGRESSION IS UP DOWN DOWN DOWN SLIGHTLY UP. It was hard having motivation to draw for much of this year due to personal issues in my life which took precedence over everything else.