Hey!
GOOD PLAN. One shots/Minicomics are really great for learning how YOU like to make comics, as they let you experiment with techniques and processes and story ideas, without trapping you into a big commitment.
Here's a minicomic that I made:
Here are some of my favorite minicomic's/one-shots on Tapastic:
And here are two of my favorite comic-people who also happen to specialize in minicomics.
http://www.emcarroll.com/
http://www.andsothen.com/
Honorable mention goes to:
Because it's not technically a one-shot or a minicomic, but it is shortform storytelling.