Still, good job and congrats!
I'm thinking about it as a programmer. I think that if I had written 2-3 games of a certain kind before, I could whip up new games very quickly, especially if reusing snippets/libraries are allowed.
Those are the top 1%. I'd say on the jams I've attended, a third made decent to good games, a third made playable, but flawed stuff, and a third's stuff really didn't come together for whatever reason.
I'm not an experienced or talented jammer, but usually there's all kinds of people here - total greenhorns, devs working outside the games industry, professionals and hobbyist veterans whose day jobs might not have anything to do with a computer.
I'd recommend trying to attend an in-person event, and try to join a team, or attend with friends.
I think the biggest revelation will be just how much work goes into making a semi-polished game, and how many different skills are required.