Now, the way I illustrate my characters is done in a very specific (And unusual) way mainly so they don't change too much, and the comic's art style remains mostly consistent. That said, there are some very specific changes that have come over the course of it's life.
Also, I started production of my comic sometime in February of last year, so this really is about one whole year later.
To start with, I'm gonna pre-date the comic's release with this very early concept art. The facial expressions and everything are really all over the place, and I clearly had no idea what I was trying to do. The shorter character, for example, I was trying to make it look like she was leaning forward. In hindsight, she looks more like an emaciated lizard person. Also, my art is digital, and I accidentally gave her two wristbands when I copied the arm.


As for when my comic actually came out, some specific things about the facial expressions changed over time. It was pretty rare of me to give characters proper eyebrows at the time, so I simply used wrinkles to convey the extra emotion in the eyes. Which, in hindsight doesn't really look the best. Also, the way I drew the mouth during an "extreme" facial expression (The face the goth character is making) Notice that the tongue kind of has the same thickness through the whole thing until it gets to the tip, and there's an even number of teeth on the bottom and front row.
And now you get to learn a little bit of insight as to how I draw my characters! By the second episode, I had developed a rule for myself. During these extreme facial expressions, the tongue bulges at the bottom to really show how it's attached to the mouth, and the bottom row of teeth is smaller in size, but greater in number like in real life. There doesn't have to be a specific number of teeth for each row, though I try to give the top at least four. And the bottom row just needs at least one more tooth. And I usually do just add one more tooth, because room is very limited.
And from my latest episode, I got a lot better at controlling the facial expressions and general movement of the characters. I pretty much completely phased out using wrinkles as an eyebrow replacement, unless a character already has them as part of their design.
Overall, the changes are pretty subtle, but when I go back to read my first episode after reading the newest ones, it becomes very clear just how much my art style has changed over time.