If you're new to playwriting and want to practice playwriting, there is no better way than to learn how to write a 10-minute play. Not only is the piece short and sweet, but it makes it easy to practice over and over without wasting time. You can feel free to make errors, write dumb lines of dialogue, and tell a story that makes no sense all at the cost of 10 pages or so. (If that seems like a lot to you, remember that play pages are much shorter than fiction pages.)