Here is some of mine. I've done a variety of art over the years.
Here is a free hand computer painting based off an old Sega game:
This one is pencil on paper:
And this one is an oil painting on canvas:
I've been getting ready to do some high quality pixel art for games. I've got photoshop ready with some custom brushes and brush sets for doing the pixel art, and I still have my Wacom pen tablet. As soon as I figure out how much I can get away with and how to optimize levels and art in games, I'll be getting started. I'm new to making games and just started learning the software a couple weeks ago.