I would show a progression of how I've improved over the years - and there have been at least ten for me - but I've erased it all. XD; So instead, here are a few older pieces that I'm proud of, even though I don't consider them "feature-worthy" most of the time.
The first two are promotional art for Realms Con. I'm working on an entry for this year's contest right now, and I'm always afraid I won't be able to measure up to all the work and care that went into these. There's another one, but I was never able to post it online. Perhaps someday it will find its way to Deviantart...
The second two are paintings of my OTP, Reeve and Vincent (or Chaos). It's kind of a rare pairing. I like to say my ship is a leaf boat. Since fanart of them is hard to find, I've always tried to make mine as good as possible. That's driven me to study, work, and experiment more than I probably would have if they had been more popular. It's only fair to say this pairing and my silly obsession with it has made me a better artist.
And the fifth is some knitting. It's not my absolute most complex ever piece of knitting, but it is a personal favorite. I've used that chart several times to make pouches for friends, for myself, and the occasional grab bag. It combines three of my favorite things: Final Fantasy, Katamari Damacy, and pixel art.