I hope to post one every week. The first two are already up. I had a lot of fun writing them and hope to write at least ten more. That's twelve stories in twelve weeks - a season's worth. When I've finished, I should, with a couple of much longer pieces, have enough for a short ebook. That's the plan. That's the challenge.
I think that anyone who's starting out writing should find exercises like this useful. Think carefully about what you want to write - a character sketch, a situation, a dialogue - and then get it down in a couple of hundred words. It shouldn't take more than an hour or two. Stick closely to the original idea; omit all that's inessential; write straight through from the beginning to the end and only then go back and start cutting and tweaking. If it doesn't work, try again. As with reading, a great deal of writing uses skills that can only be improved by practice.
*A diptych is essentially a trilogy with the difficult middle volume omitted.