It's also worth noting that some people will be too afraid to post in those boards. Plainly because they get intimidated by the level of work that others submit and they are afraid that their work would look "stupid" among the other pieces.
But I've always said that everyone has to start somewhere to improve. Better still, even if your work was rubbish. Instead of going along with it for the rest of the year (ultimately your exam), you post it here and then you'll know exactly what to do in order to improve your level of work/writing and as such you'll be a crucial few steps ahead than if you'd just passed such a resource.
In short. You only get one shot, do not miss your chance to blow this opportunity comes once in a lifetime yo