How to Write 100-Word Flash Fiction

It's been a while since I wrote a how-to piece, but it's been sitting at the back of my mind to do one. I figure I'll start with one type of flash fiction, and move on to another, but if there's something any of you would like to see, in particular, let me know.100-word flash. It's not as easy as it sounds, since you're still trying to write a story with a beginning, middle and an end. I'll work