This is key, isn't it?Alain Gomez said:Write what you enjoy. It's painfully obvious when it's forced.
Why not just write a story and instead of restricting yourself by genre, limit the word count. See what you get.
If you don't like it, you can write another, and another, and another, and then bundle them in a collection called Stories I Don't Like, sell it for $3.99, and viola.