Really, it wasn't that big of a mistake, but something you needed to be aware of. Also, two weeks (or less even) would probably be better as far as timing your updates is concerned. Fics can be updated any time, but it's normally not good to hold off too long or any potential readers may overlook your story, not to mention waiting for more people to read gets tedious (I know that from experience).
Still, it's not a bad story. Zy was just pointing out that there is a difference between RPs and actual fiction writing, though they do have some similarities.