On the listing you will see a Revise button.
You can edit your listing or just add the correct category. If you go for the latter, you will be charged about 30 cents for the second category.
Don't beat yourself up. This is a learning experience. And you may find your buyers search by title rather than by category in any case.
Good luck with your new enterprise!
Well, maybe I'm not a fancy gentleman like you, with your... very fine hat. But I do business. We're here for business. -- Captain Malcolm Reynolds
